Question

give any three example of forces acting on a body???​

Answer 1

Forces due to gravity, electric fields and magnetic fields are examples of body forces. Body forces contrast with contact forces or surface forces which are exerted to the surface of an object. Normal forces and shear forces between objects are surface forces as they are exerted to the surface of an object.

Answer 2

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In this case the block has following forces:

normal force(upward)

frictional force (downward)

weight (downward)

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