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प्रश्न
Define non-contact forces.
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उत्तर
The forces which act on a body without the help of any connector, are called non-contact forces or forces of distance. Gravitational force, Mechanical force, etc., are non-contact forces.
संबंधित प्रश्न
Less force is needed when applied at a farther distance from the pivoted point.
State the S.I. unit of moment of force.
The moment of a force of 25 N about a point is 2.5 N m. Find the perpendicular distance of force from that point.
Is moment of force a scalar or a vector?
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.
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
Classify the following amongst contact and non-contact forces.
gravitation force
Classify the following amongst contact and non-contact forces.
magnetic force
Define the moment of force.
Give an example for each of the following uses of a machine:
to change the point of application of force
