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प्रश्न
What is meant by a rotatory motion? Give one example.
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उत्तर
If a rigid body is pivoted at a point, then the applied force will rotate the body about the fixed point or about the axis passing through the fixed point. This motion is called rotational motion.
e.g. Earth's rotation about its axis, wheels of car in motion.
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संबंधित प्रश्न
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`["Hint" : "Efficiency" = "useful power"/"power input"]`
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What happens to the power if the time for doing work is reduced from t second to t/10 second?
A force of 1 kgf displaces a body by a distance of 10 cm
(i) in direction of force,
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(iii) at an angle of 60° to the direction of the force.
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