Write condition of translational equilibrium of particle.

Write the condition for rotational equilibrium.

Write condition for equilibrium of a particle when more than one force act on it.

Write condition for total internal reflection.

Write condition for equilibrium when two force act on a particle.

A charged particle having some mass is resting in equilibrium at a height H above the center of a uniformly charged non-conducting horizontal ring of radius R . The equilibrium of the particle will be stable .

Write condition of equilibrium when three force act on a particle.

Write the expression of potential energy of SHM particle (i) as a function of displacement (ii) as a function of time.

Explain with illustration the pure translation and combination of translation and rotation motion of rigid body.