Question

A particle of mass m is attached to a spring of spring constant k kept horizontally on a smooth surface, then at mean position

• A. the net force acting on the mass is zero
• B. the net force acting on the mass is +kx
• C. the net force acting on the mass is -kx
• D. the net forces acting on the mass is ma+kx

Answer 1

The correct option is A the net force acting on the mass is zero

At mean position, the particle is at rest and no force acts on it. Hence net force is zero
The correct option is (a)