A block of mass $1 kg$ is suspended by a string of mass $1 kg$, length $1 m$ as shown in figure. $(g=10\,m /$ $s ^2$ ) Calculate:Force exerted by support on string.
$10\,N$
$20\,N$
$15\,N$
$25\,N$
With what minimum velocity should block be projected from left end $A$ towards end $B$ such that it reaches the other end $B$ of conveyer belt moving with constant velocity $v$. Friction coefficient between block and belt is $\mu$.
A block can slide on a smooth inclined plane of inclination $\theta $ kept on the floor of a lift. When the lift is descending with an acceleration $'a'$ . Then the acceleration of the block relative to the incline is
Two blocks are connected by a spring. The combination is suspended, at rest, from a string attatched to the ceiling, as shown in the figure. The string breaks suddenly. Immediately after the string breaks, what is the initial downward acceleration of the upper block of mass $2\,m$ ?
A person in an elevator accelerating upwards with an acceleration of $2\,ms^{-2}$ , tosses a coin vertically upwards with a speed of $20\,ms^{-1}$ . After how much time will the coin fall back into his hand ? $(g = 10\,m s^{-2})$