Physics-
General
Easy
Question
A plank with a uniform sphere placed on it rests on a smooth horizontal plane. Plank is pulled to right by a constant force F. If sphere does not slip over the plank. Which of the following is incorrect.
- Acceleration of the centre of sphere is less than that of the plank.
- Work done by friction acting on the sphere is equal to its total kinetic energy.
- Total kinetic energy of the system is equal to work done by the force F
- None of the above
The correct answer is: Total kinetic energy of the system is equal to work done by the force F
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