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प्रश्न
State whether the moment of force is a scalar or vector quantity?
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उत्तर
Moment of a force is a vector quantity.
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संबंधित प्रश्न
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?
State the S.I. unit of moment of force.
What do you mean by the clockwise and anti-clockwise moment of force?
A tall building has wide foundations.
Write the expression for calculating the moment of force about a given an axis.
It is easier to turn the steering wheel of a large diameter than that of a small diameter. Given reason.
A wheel of diameter 2 m is shown in the figure with the axle at O. A force F = 2 N is applied at B in the direction shown in the figure. Calculate the moment of force about
- the centre O, and
- the point A.

(i) What do you understand by the term couple of forces?
(ii) Calculate the moment of a couple shown in fig.

Three forces A, B and C are acting on a rigid body which can turn about O in fig.9. If all the three forces are applied simultaneously, in which direction will the body move? Explain.

Calculate the magnitude of the force of a couple, when the arm of the couple is 63 cm and the moment of the couple is 21 Nm.
