Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
The turning effect produced by a force on a rigid body about a point, pivot or fulcrum is called the moment of force or torque. It is measured by the product of force and the perpendicular distance of the pivot from the line of action of force.
APPEARS IN
संबंधित प्रश्न
A stone of mass m is rotated in a circular path with a uniform speed by tying a strong string with the help of your hand. Answer the following questions
1) Is the stone moving with a uniform or variable speed?
2) Is the stone moving with a uniform acceleration? In which direction does the acceleration act?
3) What kind of force acts on the hand and state its direction?
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.
State the principle of moments.
A body is provided at a point. A force of 20 N is applied at a distance of 40 cm from the pivot. Find the moment of force about the pivot.
What is a centripetal force?
What do you mean by a centrifugal force?
In which one of the following cases is the work done more? When the angle between the direction of motion and that of the force is (i) 90° (ii) 0°.
State and define the unit of force in the S.I. system.
What is the S.I. unit of work? Define it.
For the following scenario, state whether the work done by gravity is positive, negative, or zero.
A person climbs a ladder.
