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संबंधित प्रश्न
Distinguish between work and power.
An electric motor drives a machine which lifts a mass of 4 kg through a height of 10 m in 5 s at a constant speed. Assuming g = 10 ms-2, calculate
(i) the amount of work done, (ii) the power of the machine.
A body of mass 60 kg has the momentum 3000 kgm/s-1. Calculate: the speed of the body.
Define Translational motion.
A block of mass 30 kg is pulled up a slope, as shown in diagram with a constant speed, by applying a force of 200 N parallel to slope.
A and B are initial and final positions of block.
(i) Calculate the work done by force in moving the block from A to B.
(ii) Calculate P.E. gained by block. [g=10ms-2]
________ is said to be done when a force is acting on it.
State whether work is done or not, by writing yes or no, in the following case:
A man pushes a wall.
