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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
To obtain a given moment of force for turning a body, the force needed can be decreased by
Name of S.I. unit of the rate of change in momentum.
The moment of a force about axis depends ______.
Two forces each of magnitude 10 N act vertically upwards and downwards respectively at the two ends A and B of a uniform rod of length 4 m which is pivoted at its midpoint O as shown in the figure. Determine the magnitude of the resultant moment of forces about the pivot O.
Define couple.
Give an example of the following uses of a machine:
to change the direction of force
A meter scale is provided at 10 cm mark and is balanced by suspending 400 g from 0 cm mark (fig.). Calculate the mass of meter scale.
How does the distance of separation between two bodies affect the magnitude of the non-contact force between them?
Calculate the minimum distance between point of application of force and axis of rotation of a rigid body, if a force 125 N produces a moment of force of 25.75 Nm.
