A particle of mass 2 kg experiences two forces, \(\vec { { F }_{ 1 } } =5\hat { i } +8\hat { j } +7\hat { k } \) and \(\vec { { F }_{ 2 } } =3\hat { i } -4\hat { j } +3\hat { k } \). What is the acceleration of the particle?

A force \(\vec F=\vec i+2\vec j+3\vec k\) k acts on a particle and displaces it through a distance \(\vec S=4\vec i+6\vec j\). Calculate the work done if force and work done are in the same direction?

Why is it much easier to balance a meter scale on your finger tip than balancing on a match stick?

State Kepler’s three laws.

What is Reynold’s number? Give its significance.

‘An object contains more heat’- is it a right statement? If not why?

The temperature of a uniform rod of length L having a coefficient of linear expansion α_L is changed by ΔT. Calculate the new moment of inertia of the uniform rod about axis passing through its center and perpendicular to an axis of the rod.

What is the relation between the average kinetic energy and pressure?

What is meant by free oscillation?

What is meant by end correction in resonance air column apparatus?