A rod is balanced vertically on one of its ends. Which one among the following is the correct nature of its state of equilibrium?

Consider the following statements: 1. There is no net moment on a body which is in equilibrium. 2. The momentum of a body is always conserved. 3. The kinetic energy of an object is always conserved.…

Which of the following is a non-contact force ?

Which one of the following statements qualitatively explains the second law of motion?

A particle is found to be at rest when observed from a reference frame S1 and the same particle is found to move with a constant velocity when observed from another frame S2. Which of the following s…

The spring constant of a spring depends on its