Laws of Motion — Physics STD 11 — Question

When the body is disturbed, the potential energy remains same, then the body is in –

If a very large force acts on an object for a very short duration, then the force is called as –

The unit of impulse is –

Center of mass may lie –

The force which always opposes the relative motion between an object and the surface where it is placed is –

The velocity with which a gun suddenly moves backward after firing is –

Torque is given as –

A box is dragged across a surface by a rope which makes an angle 45° with the horizontal. The tension in the rope is 100 N when the box is dragged 10 m. The work done is

A circular plate of diameter 10 cm is kept in contact with a square plate of side 10 cm. The density of the material and the thickness are same everywhere. The center of mass of the system will be

The fundamental frequency of a closes organ pipe of length 20 cm is equal to the second overtone of an organ pipe open at both the ends. The length of the organ pipe open at both the ends is ……