Question

61. (a) What is meant by a contact force ? Explain with the help of an example.
(b) What is meant by a non-contact force ? Explain with the help of an example.
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Answer 1

Explanation:

Explanation:A non-contact force is a force which acts on an object without coming physically in contact with it. The most familiar non-contact force is gravity, which confers weight. In contrast a contact force is a force applied to a body by another body that is in contact with it.

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Answer 2

Answer:

(a)A contact force is any force that requires contact to occur. Contact forces are ubiquitous and are responsible for most visible interactions between macroscopic collections of matter. Pushing a car up a hill or kicking a ball across a room are some of the everyday examples where contact forces are at work.

(b)A non-contact force which acts on a object without coming physically in contact with it. The most familiar examples of a non-contact force is gravity,which confers weight.In contrast a contact force is a force applied to a body by another body that is in contact with it.