Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
P.E = mgh = 1 x 10 x 1 = 10J
APPEARS IN
संबंधित प्रश्न
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.
Power spent by a body depends on the time for which it does work.
What are the two kinds of mechanical energy?
A boy of weight 40 kgf climbs up the 15 steps, each 15 cm high in 10 s and a girl of weight 20 kgf does the same in 5 s. Compare:
- the work done, and
- the power developed by them. Take g = 10 N kg-1.
Find the kinetic energy of a body of mass 1 kg moving with a uniform velocity of 10 m s-1.
The velocity of a car increases from 54 km/hr to 72 km/hr. How much is the work done if the mass of the car is 1500 kg?
Name the physical quantity associated with the 'rate of doing work'.
How is horse power related to the S. I. unit of power?
