Work, Energy and Power questions
712 published questions with worked solutions.
- The force acting on a particle of mass m moving along the x-axis is given by F(x) = Ax^2 - Bx. Which one of the following is the...
- Which one of the following statements about energy is correct ?
- The correct sequence of energy transfer that occurs when an apple falls to the ground is
- Which one of the following forces is non-central and non-conservative ?
- A rigid body of mass 2 kg is dropped from a stationary balloon kept at a height of 50 m from the ground. The speed of the body...
- Work is said to be one Joule when a force of
- An object of mass 2000 g possesses 100 J kinetic energy. The object must be moving with a speed of
- Which one of the following is not a conservative force ?
- A negative work is done when an applied force F and the corresponding displacement S are
- A mass M is dragged by a pulley on a horizontal plane by a force anti-parallel to its displacement. The work done in pulling the...
- The energy possessed by a body due to its change in position or shape is called
- The power required to lift a mass of 8·0 kg up a vertical distance of 4 m in 2 s is (taking acceleration due to gravity as 10 m/s...
- There is a ball of mass 320 g. It has 625 J potential energy when released freely from a height. The speed with which it will hit...
- Which one of the following statements for the work done by gravity on a body is NOT correct ?
- The work done by the force acting on an object is zero if the displacement of the object
- The energy is always conserved for a system which is
- Suppose, a ball of mass M is thrown upwards from a point A and it reaches up to the highest point B and returns back to point A,...
- A ball is dropped from rest from height h above the ground in frame S (the Earth's frame). Another frame S' is moving upwards...
- A constant power machine pulls a block on a smooth horizontal surface. Which one of the following correctly describes the...
- A particle is moved from point X to point Y under a force field. The work done depends only on the initial and final speeds....
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