List of top Physics Questions on laws of motion

A body at rest explodes into two pieces of same masses which
A block of mass 4 kg is suspended through two light spring balances A and B of spring constants $K_A$ and $K_B$ ($K_A$ > $K_b$). Then spring balances A and B will read
A block of mass 7 kg is placed on a smooth table. An unstretchable thread tied to it passes over a frictionless pulley and carries another mass of 3 kg at other end. The acceleration of the system is
A ball is travelling with uniform translatory motion. This means that
Consider the situation shown in the figure. The wall is smooth but the surfaces of blocks $A$ and $B$ in contact are rough. The friction on $A$ due to $B$ in equilibrium
A table fan, rotating at a speed of $2400 \, \, \text{r} \text{p} \text{m}$ is switched off and the resulting variation of the rpm with time is shown in the figure. The total number of revolutions of the fan before it comes to rest is
A $2 \, \, \text{kg }$ stone tied at the end of a string $1 m$ long is whirled along a vertical circle at a constant speed of $4 \, m \, s^{- 1}$ . The tension in the string has a value of $52 N$ when the stone is
A horizontal disk is rotating with angular velocity $\omega $ about a vertical axis passing through its centre. A ball is placed at the centre of groove and pushed slightly. The velocity of the ball when it comes out of the groove-
A car is moving with speed $20 \, \, \text{m s}^{- 1}$ on a circular path of radius $100 \, \, \text{m}$ . Its speed is increasing at a rate of $3 \, \text{m s}^{- 2}$ . The magnitude of the acceleration of the car at that moment is
The normal reaction on a body placed in a lift moving up with constant acceleration $2 \, m \, s^{- 1}$ is $120 \, N$ . Mass of the body is (Take $g=10 \, m \, s^{- 2}$ )
A block of mass $M$ is resting on a smooth horizontal plane. One end of a uniform rope of mass $\frac{M}{4}$ is fixed to the block, which pulled it in the horizontal direction by applying a force $F$ at the other ends. The tension in the middle of the rope is
For the arrangement in the figure, the particle $M_{1}$ attached to one end of a string which moves on a horizontal table in a circle of radius $=\frac{l}{2}$ (where $l$ is the length of the string) with the constant angular speed $\omega $ . The other end of the string attached to mass $M_{2}$ which rests on a vertical rod. When the rod collapse, the acceleration of mass $M_{2}$ at that instant