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प्रश्न
What is thrust?
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उत्तर
Thrust is a force or a push. When a system pushes or accelerates mass in one direction, there is a thrust (force) just as large in the opposite direction.
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संबंधित प्रश्न
A nut is opened by a wrench of length 20 cm. If the least force required is 2N, find the moment of force needed to loosen the nut.
Moment of force = force × perpendicular distance of force – from the pivoted point.
To obtain a given moment of force for turning a body, the force needed can be decreased by
State the effect of force F in of the following diagram.
State one factor on which the magnitude of a non-contact force depends. How does it depend on the factor stated by you?.
Is moment of force a scalar or a vector?
A spanner (or wrench) has a long handle. Why?
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.
Define non-contact forces.
