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Recent questions tagged work-done-by-a-constant-force

A man lifts 100 boxes each of mass 15 g to a height of 1.5 m. Find the work done by the man against gravity

asked Aug 28, 2014 by sreemathi.v

1 answer

How much work is done when a constant force of 500 N is used to push a cart through a displacement of magnitude 25 m to final position along the $x$-axis

asked Aug 28, 2014 by sreemathi.v

1 answer

A constant force $F=(2\hat{i}+3\hat{j})$ newton displaces a body from position $r_1=(4\hat{i}-5\hat{j})$ metre to $r_2=(\hat{i}+3\hat{j})$ metre.Find the work done by the force.

asked Aug 28, 2014 by sreemathi.v

1 answer

How much work is done against gravity in lifting a 3kg object through a distance of 40cm?

asked Aug 28, 2014 by sreemathi.v

1 answer

A horizontal force F pulls a 20-kg carton across the floor at constant speed.If the coefficient of sliding friction between carton and floor is 0.60,how much work does F do in moving the carton 3.0m?

asked Aug 28, 2014 by sreemathi.v

1 answer

Figure shows the top view of two horizontal forces pulling a box along the floor the box is displaced 70cm along the broken line?What is the total work done by the two forces in pulling the box this distance?

asked Aug 28, 2014 by sreemathi.v

1 answer

A horizontal force of 25N pulls a box along a table.How much work does it do in pulling the box 80cm?

asked Aug 28, 2014 by sreemathi.v

1 answer

A cyclist comes to a skidding stop in 10 m. During this process, the force on the cycle due to the road is 200 N and is directly opposed to the motion.How much work does the road do on the cycle?

asked Aug 28, 2014 by sreemathi.v

1 answer

A particle of mass m moves in a straight line with its velocity varying with distance travelled according to the equation $v=a\sqrt {x}$ , where a is a constant. What is the total work done by all the forces during a displacement from x = 0 to x = d?

asked Aug 25, 2014 by balaji.thirumalai

1 answer

Which of the following is true, if no work is done by a force on an object?

asked Aug 25, 2014 by balaji.thirumalai

1 answer

Calculate work done to move a body of mass 10 kg along an incline $(\theta=30^{\circ})$ with constant velocity through a distance 10 m $(g=10 m/s^2)$

asked Jul 18, 2013 by meena.p

1 answer

A 50kg man with 20kg load on his head climbs up 20 steps of 0.25m height each. The work done in climbing is

asked Jul 17, 2013 by meena.p

1 answer

A block of weight $W$ is pulled along a distance $d$ on a table. The work done by the weight is

asked Jul 17, 2013 by meena.p

1 answer

A block of mass 5 kg is being raised vertically upward by the help of a string attached to it. It rises with an acceleration of $2m/s^2$. The block rises by 2.5 m .the work done by tension and work done against gravity are respectively

asked Jul 17, 2013 by meena.p

1 answer

Force acting on a particle is $(2i+3j)N$ . Work done by the force is zero, when the particle is moved on the line $3y+kx =5$ value of k is

asked Jul 16, 2013 by meena.p

1 answer

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