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प्रश्न
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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.
Examples of turning effect of force:
(i) Turning a steering wheel
(ii) Tightening a cap
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संबंधित प्रश्न
A nut is opened by a wrench of length 20 cm. If the least force required is 2N, find the moment of force needed to loosen the nut.
A half metre rod is pivoted at the centre with two weights of 20gf and 12gf suspended at a perpendicular distance of 6 cm and 10 cm from the pivot respectively as shown below.
1) Which of the two forces acting on the rigid rod causes clockwise moment?
2) Is the rod in equilibrium?
3) The direction of 20 kgf force is reversed. What is the magnitude of the resultant moment of the forces on the rod?
Moment of force = force × perpendicular distance of force – from the pivoted point.
Moment of force =............... × distance of force from the point of turning.
State two effects of a force when applied on a body.
State the effect of force F in of the following diagram.
State Newton's first law of motion. Why is it called the law of inertia?
Classify the following amongst contact and non-contact forces.
gravitation force
State two factors affecting the turning effect of a force.
State the effects that a force can produce. Given one example of each.
