Email

Chat with tutors

Login

Ask Questions, Get Answers

Menu X

home ask tuition questions practice papers mobile tutors pricing

X

Recent questions tagged laws-of-motion

Three blocks of masses $m_1, m_2$ and $m_3$, with $m_1 \lt m_2 \lt m_3$, are placed in contact with each other on a frictionless, horizontal surface, as shown. A constant horizontal force $F$ is applied to $m_1$ as shown. What is the contact force on $m_2$?

asked Aug 20, 2014 by balaji.thirumalai

1 answer

Two blocks of masses $m_1$ and $m_2$, with $m_1 \lt m_2$, are placed in contact with each other on a frictionless, horizontal surface, as shown. A constant horizontal force $F$ is applied to $m_1$ as shown. What is the contact force on $m_2$?

asked Aug 20, 2014 by balaji.thirumalai

1 answer

A large man and a small boy stand facing each other on frictionless ice. They put their hands together and push against each other so that they move apart. Which of the following is true?

asked Aug 20, 2014 by balaji.thirumalai

1 answer

Consider the following Atwood machine with three masses in the ratio m$_1$: m$_2$: m$_3$:: 1:2:3, hung with a massless string over a friction-less pulley. What is the tension in the string between masses m$_1$ and m$_2$?

asked Aug 20, 2014 by balaji.thirumalai

1 answer

Consider the following Atwood machine with three masses in the ratio m$_1$: m$_2$: m$_3$:: 1:2:3, hung with a massless string over a friction-less pulley. What is the tension in the string between masses m$_2$ and m$_3$?

asked Aug 20, 2014 by balaji.thirumalai

1 answer

Consider the following Atwood machine with three masses in the ratio m$_1$: m$_2$: m$_3$:: 1:2:3, hung with a massless string over a friction-less pulley. What is the common acceleration of the system?

asked Aug 20, 2014 by balaji.thirumalai

1 answer

Two blocks (m$_1$) and (m$_1$), where m$_1 \gt\;$ m$_2$ are connected as shown on frictionless surface. Find the common acceleration of the masses, ignoring any friction effects.

asked Aug 20, 2014 by balaji.thirumalai

1 answer

The device shown here is called an Atwood's machine. m$_1$ and m$_2$ are suspended at the ends of a string of negligible mass passing over a friction-less pulley as shown here. What is the acceleration in the light cord that connects the two masses if $\;m_1 = 2 m_2$?

asked Aug 20, 2014 by balaji.thirumalai

1 answer

A 5-kg block (m$_1$) and 2-kg block (m$_2$) are connected as shown on frictionless surface. Find the tension in the rope connecting the two blocks. Ignore any friction effects.

asked Aug 19, 2014 by balaji.thirumalai

1 answer

A cord passing over a frictionless, massless pulley (Atwood's machine) has a $m_2 =$ 10-kg block tied to one end and a $m_1 =$ 12-kg block tied to the other. If at the end of 3 seconds the string is cut, find the distances moved by the masses $d_1$ and $d_2$ in the next 6 seconds.

asked Aug 19, 2014 by balaji.thirumalai

1 answer

The device shown here is called an Atwood's machine. m$_1$ and m$_2$ are suspended at the ends of a string of negligible mass passing over a friction-less pulley as shown here. What is the tension in the light cord that connects the two masses?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

The system on the left shown here is called an Atwood's machine. m$_1$ and m$_2$ are suspended at the ends of a string of negligible mass passing over a friction-less pulley as shown here. The system on the right just has a hanging mass m. What should m be in terms of m$_1$ and m$_2$ so that the tension in the top string is the same in both cases? Assume that the two systems have equal downward acceleration (a').

asked Aug 19, 2014 by balaji.thirumalai

1 answer

The device shown here is called an Atwood's machine. m$_1$ and m$_2$ are suspended at the ends of a string of negligible mass passing over a friction-less pulley as shown here. How far will m$_1$ fall in time $t$ after the system is released?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

The device shown here is called an Atwood's machine. m$_1$ and m$_2$ are suspended at the ends of a string of negligible mass passing over a friction-less pulley as shown here. What is the acceleration and the tension in the light cord that connects the two masses if m$_1$ = 12 kg and m$_2$ = 4 kg?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

What is the normal force on the object of mass m$_1$ (20 kg) shown in the diagram? What is the acceleration of the object?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

You are thrown from a bicycle and skid in a straight line to a complete stop on a rough road at t a distance of 3.5 m along a straight line. What average force did the road exert on your body if your mass is 70 kg and your initial speed was 30 km/h?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

A crate with mass 32.5 kg initially at rest on a warehouse floor is acted on by a net horizontal force of 140 N. How far does the crate travel in 10.05 s?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

If a net horizontal force of 130 N is applied to a person with mass 60 kg who is resting on the edge of a swimming pool, what is the horizontal acceleration produced?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

Consider a block of mass 5 kg on a table top initially at rest. Assume that the surface is frictionless. Let a pushing force of 50 N directed at an angle of 30$^\circ$ below the horizontal act on the block. Find the acceleration of the block and the normal force that the table exerts on the block.

asked Aug 19, 2014 by balaji.thirumalai

1 answer

Consider a box of mass 10 kg being lifted upward by a person standing on the surface of the earth. At a given instant the box is being accelerated upwards with an acceleration of size 5 m/s$^2$. Find the force that the person exerts on the box at this instant.

asked Aug 19, 2014 by balaji.thirumalai

1 answer

Imagine you are standing on a cardboard box that is only just strong enough to support your weight. What would happen to it if you tried to jump into the air? The cardboard box would

asked Aug 19, 2014 by balaji.thirumalai

1 answer

An object experiences an acceleration of magnitude $3.75 m/s^2$. Calculat the mass of the object given there are three forces acting on an object as follows:

asked Aug 19, 2014 by balaji.thirumalai

1 answer

A force applied to an object of mass $\text{m1}$ produces an acceleration of 3.00 ms$^{-2}$. The same force applied to a second object of mass $\text{m2}$ produces an acceleration of 1.00 ms$^{-2}$. If the two masses are combined into one object, what is the acceleration under the action of the force?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

A force applied to an object of mass $\text{m1}$ produces an acceleration of 3.00 ms$^{-2}$. The same force applied to a second object of mass $\text{m2}$ produces an acceleration of 1.00 ms$^{-2}$. What is the value of the ratio $\large\frac{\text{m1}}{\text{m2}}$?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

What are the missing forces on this Free Body Diagram?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

What is the missing force on this Free Body Diagram?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

If the forces acting upon an object are balanced, then the object

asked Aug 19, 2014 by balaji.thirumalai

1 answer

A 2-kg object is moving horizontally with a speed of 8 m/s. How much net force is required to keep the object moving at this speed and in this direction?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

Let an object be at rest initially and you push it with constant force across a friction-less surface for a time internal $\Delta t$ resulting in a final speed of $v$ for the object. Now, if you repeat the experiment with a force that is twice as large, what will be the time internal needed to reach the same final speed $v$?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

Consider a car moving west along a highway with a constant velocity of 65 km per hour. What happens when the driver takes his foot off the accelerator pedal?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

Suppose we are standing in a stationary bus and the driver starts the bus suddenly. Which of the following is correct?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

An astronaut accidentally gets separated out of his small spaceship accelerating in inter stellar space at a constant rate of 100 m s$^{-2}$. What is the acceleration of the astronaut the instant after he is outside the spaceship assuming there are no nearby stars to exert gravitational force on him?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

Consider a cart on a horizontal friction-less surface. Once the cart has been given a push and released, it moves with constant velocity. What would have to be done in order to have the cart continue with constant acceleration?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

Consider a cart on a horizontal friction-less surface. Once the cart has been given a push and released, what will happen to the cart?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

Which of the following statements is MOST correct?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

You kick a smooth flat stone out on a frozen pond. The stone slides, slows down, and eventually stops. This is because:

asked Aug 19, 2014 by balaji.thirumalai

1 answer

You put your book on the bus seat next to you. When the bus suddenly stops, the book slides forward off the seat. Why?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

A hockey puck slides on ice at constant velocity. What is the net force acting on the puck?

asked Aug 19, 2014 by balaji.thirumalai

1 answer

A book is lying at rest on a table. The book will remain there at rest because

asked Aug 19, 2014 by balaji.thirumalai

1 answer

A body of mass 2 kg is moving on the ground comes to rest after some time. The coefficient of kinetic friction between body and the ground is 0.2. The retardation in the body is

asked Jul 16, 2013 by meena.p

1 answer

A particle moves on a rough horizontal ground with some initial velocity $V_0$. If $\large\frac{3}{4}$th of its kinetic energy is lost in friction in time $t_0$ the coefficient of friction is

asked Jul 15, 2013 by meena.p

1 answer

A small mass is hung from the ceilling of a train compartment. The train moves up an incline of $30 ^{\circ}$ with horizontal. Acceleration of train up the incline is $a=\large\frac{g}{2}.$ The angle with which the string supporting the mass makes with normal to ceiling in equilibrium

asked Jul 15, 2013 by meena.p

1 answer

A body is placed on rough inclined plane of inclination $\theta$. As angle $\theta$ is increased from $0^{\circ}$ to $ 90^{\circ}$ the contact force between the block and plane

asked Jul 15, 2013 by meena.p

1 answer

A block of mass $5 kg$ lies on a horizontal table. A force of $19.6 N$ is enough to keep the body sliding at uniform speed. The coefficient of sliding friction

asked Jul 15, 2013 by meena.p

1 answer

If rope of lift suddenly breaks the tension exerted by surface of the lift, where a is acceleration of the lift is

asked Jul 15, 2013 by meena.p

1 answer

A monkey of mass $20\; kg$ is holding a vertical rope. The rope will not break when mass of $25\; kg$ is suspended from it. but will break if the mass exceeds $25\; kg$. what is the accelerations (maximum) with which the monkey can climb up along the rope. $(g=10 m/s^2)$

asked Jul 15, 2013 by meena.p

1 answer

A $30\; g$ bullet initially travelling at $120 \;m/s$ penetrates $12\; cm$, into a wooden block. The average resistance exerted by block is

asked Jul 15, 2013 by meena.p

1 answer

A car of 1000 kg with velocity 18 km/hr is stopped by brake of 1000 N. distance covered by it before stopping is

asked Jul 15, 2013 by meena.p

1 answer

Three forces acting on a body as shown. To have resultant force only along y-direction, the magnitude of the minimum additional force needed is

asked Jul 15, 2013 by meena.p

1 answer

A block rests on a rough inclined plane making an angle of $30 ^{\circ}$ with the horizontal. The coefficient of static friction between block and the plane is 0.8. If the frictional force on the block is 10 N, the mass of block is $(g=10 m/s^2)$

asked Jul 15, 2013 by meena.p

1 answer

Page:

Feedback Terms Facebook Twitter About Us

Your payment for is successful.

...