Question

Recognize the force acting in the following cases and mention whether they are contact or non-contact forces:

a. Artificial satellites revolve around the Earth with a fixed time period in specified orbits.

b. A ball rolling on the ground stops after sometime.

c. When a current is passed through a conductor the magnetic needle of a compass shows a deflection

d. A television screen collects dust easily.

e. A boy is standing holding a bucket of water in his hand.

Explain why the forces acting do not move the bucket in part (e).
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Answer 1

Answer:

a.gravitational force

b. friction force

c. magnetic force

d. static force

e.reaction force/gravitational force/tension force