Advertisements
Advertisements
प्रश्न
State the principle of moments.
Advertisements
उत्तर
Principle of moments: If a body is in equilibrium under the action of number of force, then the sum of clockwise moments is equal to the sum of anticlockwise moments.
APPEARS IN
संबंधित प्रश्न
If the power of a motor is 100 kW, at what speed can it raise a load of 50,000 N?
When does a force do work?
Give an example when work done by the force of gravity acting on a body is zero even though the body gets displaced from its initial position.
Differentiate between work and power.
kWh is the unit of ______.
Is it possible that no transfer of energy may take place even when a force is applied to a body?
A mechanic can open a nut by applying a force of 200 N while using a lever handle of 50 cm length. How long handle is required if he wants to open it by applying a force of only 50 N?
A man raises a box of mass 50 kg to a height of 2 m in 20s, while another man raises the same box to the same height in 50s. Calculated:
- the work done, and
- the power developed by each man. Take g = 10 N kg-1.
State two conditions for work to be done.
Derive a relation between the S.I. and C.G.S. unit of force.
