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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
The steering wheel of a vehicle is of large diameter.
The spanner (or wrench) has a long handle.
Name and define the S.I. and C.G.S. units of force. How are they related?
State two factor on which moment of force about a point depends.
Classify the following amongst contact and non-contact forces.
gravitation force
One joule is the amount of work done when a force of ......... moves a body through a distance of .......
Fig. shows a uniform meter scale weighing 100 N pivoted at its centre. Two weights of 500 N and 300 N are hung from the ruler as shown in fig.
(i) Calculate total clockwise and anticlockwise moments.
(ii) Calculate difference in clockwise moment and anticlockwise moment.
(iii) Calculate the distance from O where a 100 N weight should be suspended to balance the meter scale.
A jack screw is provided with a long arm. Explain why?
Under what condition will a set of gears produce a gain in torque.
The diagram shows wheel O pivoted at point A. Three equal forces F1, F2 and F3 act at point B on the wheel.
- Which force will produce maximum moment about A?
- Give a reason for your answer in (a).
