Advertisements
Advertisements
प्रश्न
What is meant by a rotatory motion? Give one example.
Advertisements
उत्तर
If a rigid body is pivoted at a point, then the applied force will rotate the body about the fixed point or about the axis passing through the fixed point. This motion is called rotational motion.
e.g. Earth's rotation about its axis, wheels of car in motion.
APPEARS IN
संबंधित प्रश्न
State and define the S.I. unit of work.
How is kilowatt hour related to joule?
One horse power is equal to ______.
What do you mean by equilibrium of a body?
Work done by a force is equal to the product of ....... and ....
What is the work done by the gravitational force on the moon that revolves around the earth?
A bullet fired against a window glass pane makes a hole in it without any cracks while a stone striking the same glass pane smashes it; explain with reason.
State the condition when the work done by the force is positive
A coolie carries a load of 30 kgf through a distance of 500 m in 5 minutes while another coolie B carries the same load through the same distance in 10 minutes. Compare the
(i) work done, and
(ii) power developed. (Take: g = 10md−2)
A man raises a box of mass 50 kg to a height of 2 m in 20 s, while another man raises the same box to the same height in 50 s. Compare:
- the work done, and
- the power developed by them. Take g = 10 N kg-1
