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प्रश्न
The S.I. unit of force is kgf. (kilogram-force)
पर्याय
True
False
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उत्तर
False.
The S.I. unit of force is newton.
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संबंधित प्रश्न
Name the factors affecting the turning effect of a body
State the effect of force F in of the following diagram.
Write an expression for the change in momentum of a body of mass m moving with velocity v if v << c.
Name of S.I. unit of the rate of change in momentum.
Is moment of force a scalar or a vector?
State one way to reduce the moment of given force about a given axis of rotation.
A, B and C are the three forces each of magnitude 4 N acting in the plane of the paper as shown in Figure. The point O lies in the same plane.
- Which force has the least moment about O? Give a reason.
- Which force has the greatest moment about O? Give a reason.
- Name the forces producing
(a) Clockwise
(b) anticlockwise moments. - What is the resultant torque about the point O?
A wheel of diameter 3 m is shown in fig. 2 with axle at 0. A force F = 8 N is applied at Q in the direction shown in figure. Calculate the moment of force about:
(i) centre o, and
(ii) point p.
State two factors affecting the turning effect of a force.
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).
