Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
P.E. is the energy possessed by a body by virtue of its position, shape or configuration but K.E. is the energy possessed by a body by virtue of its velocity or motion.
E.g. A ball kept on a cliff possesses P.E. but as soon as it is kicked it possesses K.E.
APPEARS IN
संबंधित प्रश्न
State two conditions when no work is done by a force.
A machine raises a load of 750 N through a height of 16 m in 5 s. calculate:
- energy spent by machine,
- power at which the machine works.
A box of weight 150 kgf has gravitational potential energy stored in it equal to 14700 J. Find the height of the box above the ground. (Take g = 9.8 N kg-1)
The work done on an object does not depend on ______.
What is the SI unit of work?
Fill in the boxe to show the corresponding energy transformation.
A proton is kept at rest. A positively charged particle is released from rest at a distance d in its field. Consider two experiments; one in which the charged particle is also a proton and in another, a positron. In the same time t, the work done on the two moving charged particles is ______.
A man squatting on the ground gets straight up and stand. The force of reaction of ground on the man during the process is ______.
