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Recent questions tagged work

A position dependent force F = (10-2x +3x$^2$ ) N acts on a small object of mass 2 kg to displace it from x = 0 to x = 3m. The work done in Joules is

asked Aug 26, 2014 by balaji.thirumalai

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

If the unit of force and length each increased by 4 times , then the unit of energy is increased by

asked Jul 18, 2013 by meena.p

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

An object of mass 1 kg travelling at 5.0 m/s enters a region of ice where the coefficient of kinetic friction is .10. Find the distance the object travels before coming to rest.

asked Jul 17, 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

A force of 0.5 N acts on body of mass 5 kg initially at rest for one minute. Find the work done by the force.

asked Jul 17, 2013 by meena.p

1 answer

Displacement of a body of mass 2 kg varies with time as $s=t^2+2t$.Where s in meters t in seconds. The work done by the force acting an body during the time t=2s to t=4s is

asked Jul 17, 2013 by meena.p

1 answer

Work done by force $F=(-6x^3\hat i)\;N$ in displaying particle from $x=4m$ to $x=-2m$ is

asked Jul 16, 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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