Question

Weight of a body would not be zero:

• A. at the centre of the earth
• B. during a free fall
• C. in interplanetary space
• D. on a frictionless surface

Answer 1

Answer: (D)

on a frictionless surface

Weight of a body is the gravitational force acting on a body through its centre of mass. Friction of a surface arises in case of a relative motion of the body through the surface.

So, friction of a surface has got nothing to do with the weight of the body on the surface. On a friction-less surface, weight of a body would not be zero.