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प्रश्न
State when the moment of force is positive and when it is negative.
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उत्तर
If the couple has a tendency to rotate the body in an anti-clockwise direction then its moment is taken positive and if the tendency of rotation is clockwise then the moment is negative.
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संबंधित प्रश्न
Define force.
State the S.I. unit of moment of force.
Find the moment of force of 20 N about an axis of rotation at distance 0.5 m from the force.
A uniform metre scale can be balanced at the 70.0 cm mark when a mark when a mass 0.05 kg is hung from the 94.0 cm mark
- draw a diagram of the arrangement
- Find the mass of the metre scale
Give an example of the following uses of a machine:
to change the direction of force
A jack screw is provided with a long arm. Explain why?
Give any two effects of a force on a non-rigid body.
How does the distance of separation between two bodies affect the magnitude of the non-contact force between them?
What is meant by the term ‘moment of force’? If the moment of force is assigned a negative sign then will the turning tendency of the force be clockwise or anti-clockwise?
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.
