Give the expression for a spring force.

Give the expression for total force acting on a mass suspended by a spring (of spring constant k) along with the meaning of the symbols used.

Write the expression of restoring force produced in the spring when the body attached at the end of the spring pull down through small displacement.

Give the expression for pseudo force on a body in a lift uniformly accelerated downwards.

Give the expression for centripetal force on the particle executing uniform circular motion.

Give the expression for the electric force on a moving charge in an uniform electric field.

Derive the expression for equivalent spring constant of (i) parallel combination of n- springs (ii) series combination of n- springs

Give the expression for the magnetic force on a moving charge in an uniform magnetic field. What will be the maximum magnetic force on the moving charge?

Give the expressions for work done by the spring and external pulling force.

Give the expression for work done by a variable force.