Question

State a factor on which the position of centre of gravity of a body depend? Explain your answer with an example.

April 5, 2024

Answer

The position of the centre of gravity of any body will depend on the type of shape it has i.e. (on the distribution of mass on the body) in it. It changes if the shape of the body is deformed.

For example, the centre of gravity of a wire is a its mid point. However, if the wire is turned in a way that it makes a circle then its centre of gravity will be at the centre of the circle.

💡 Some Related Questions

A piece of stone tied at the end of a thread is whirled in a horizontal circle with uniform speed with the help of hand. Answer the following questions:
(a) Is the velocity of stone uniform or variable?
(b) Is the acceleration of stone uniform or variable?
(c) What is the direction of acceleration of stone at any instant?
(d) Which force provides the centripetal force required for circular motion?
(e) Name the force and its direction which acts on the hand.

A small pebble tied at one end of a string is placed near the periphery of a circular disc, at the center of which the other end of the string is tied to a peg. The disc is rotating about an axis passing through its centre.
(a) What will be your observation when you are standing outside the disc? Explain.
(b) What will be your observation when you are standing at the centre of the disc. Explain.

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Explain the meaning of uniform circular motion. Why is such motion said to be accelerated?

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(a) How does a centripetal force differ from a centrifugal force with reference to the direction in which they act?
(b) Is centrifugal force the force of reaction of the centripetal force?
(c) Compare the magnitudes of centripetal and centrifugal force.

Explain the motion of a planet around the Sun in an elliptical path.

What is a centripetal force ?

Differentiate between uniform linear motion and a uniform circular motion.