Questions tagged 'WEP'

• A body of mass m is moving in a circle of radius r with a constant speed v. The force on the body is $\frac{{m{v^2}}}{r}$ and is directed towards the centre. What is the work done by this force in moving the body over half the circumference of the circle
  Category: Work, Energy and Power | Tags: WEP, Work Done by Constant Force
• If the unit of force and length each be increased by four times, then the unit of energy is increased by
  Category: Work, Energy and Power | Tags: WEP, Work Done by Constant Force
• A man pushes a wall and fails to displace it. He does
  Category: Work, Energy and Power | Tags: WEP, Work Done by Constant Force
• The same retarding force is applied to stop a train. The train stops after 80 m. If the speed is doubled, then the distance will be
  Category: Work, Energy and Power | Tags: WEP, Work Done by Constant Force
• A body moves a distance of 10 m along a straight line under the action of a force of 5 N. If the work done is 25 joules, the angle which the force makes with the direction of motion of the body is
  Category: Work, Energy and Power | Tags: WEP, Work Done by Constant Force
• You lift a heavy book from the floor of the room and keep it in the book-shelf having a height 2 m. In this process you take 5 seconds. The work done by you will depend upon
  Category: Work, Energy and Power | Tags: WEP, Work Done by Constant Force
• A body of mass m kg is lifted by a man to a height of one metre in 30 sec. Another man lifts the same mass to the same height in 60 sec. The work done by them are in the ratio
  Category: Work, Energy and Power | Tags: WEP, Work Done by Constant Force
• A force $F = (5\hat i + 3\hat j)$ newton is applied over a particle which displaces it from its origin to the point $r = (2\hat i - 1\hat j)$ metres. The work done on the particle is
  Category: Work, Energy and Power | Tags: WEP, Work Done by Constant Force
• A force acts on a 30 gm particle in such a way that the position of the particle as a function of time is given by $x = 3t - 4{t^2} + {t^3}$, where x is in metres and t is in seconds. The work done during the first 4 seconds is
  Category: Work, Energy and Power | Tags: WEP, Work Done by Constant Force
• A body of mass 10 kg is dropped to the ground from a height of 10 metres. The work done by the gravitational force is $(g = 9.8\,m/{\sec ^2})$
  Category: Work, Energy and Power | Tags: WEP, Work Done by Constant Force

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