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संबंधित प्रश्न
Define 1 J of work.
In each of the following a force, F is acting on an object of mass, m. The direction of displacement is from west to east, as shown by the longer arrow. Observe the diagrams carefully and state whether the work done by the force is negative, positive or zero.
The moon is revolving around the earth in a circular path. How much work is done by the moon?
The power of a motor is 40 kW. At what speed can the motor raise a load of 20,000 N?
A boy weighing 25 kgf climbs up from the first floor at height 3 m above the ground to the third floor at height 9m above the ground. What will be the increase in his gravitational potential energy? (Take g = 10 N kg -1)
How much work is done by the gravitational force of earth acting on a satellite moving around it in a circular path? Give reason for your answer.
Is power a scalar quantity?
State larger units of power.
