Two equal masses $A$ and $B$ are arranged as shown in the figure. Pulley and string are ideal and there is no friction. Block $A$ has a speed $u$ in the downward direction. The speed of the block $B$ is :-
$u\, cos\, \theta$
$\frac{u}{sin\, \theta}$
$\frac{u}{cos\, \theta}$
$u\, sin\, \theta$
In the figure, mass of a ball is $\frac{9}{5}$ times mass of the rod. Length of rod is $1 \,m$. The level of ball is same as rod level. Find out time taken by the ball to reach at upper end of rod. (in $S$)
A man is slipping on a frictionless inclined plane and a bag falls down from the same height. Then the velocity of both is related as
Three blocks of masses $m_1=4 \,kg , m_2=2 \,kg , m_3=4 \,kg$ are connected with ideal strings passing over a smooth. massless pulley as shown in figure. The acceleration of blocks will be ......... $m / s ^2$ $\left(g=10 \,m / s ^2\right)$
Find the velocity of the hanging block if the velocities of the free ends of the rope are as indicated in the figure.
At a given instant, $A$ is moving with velocity of $5\,\,m/s$ upwards.What is velocity of $B$ at that time