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Standard XII

Physics

Combination of Springs

Two Small rin...

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Two Small rings O and O' are put on two vertical stationary- rods AB and A` B, respectively. One end of an inextensible thread is tied at point A`. The thread through ring O' and its other end is tied at point a' and is passed through ring y .Assuming that ring O' moves downwards at a constant velocity by V find v of ring y if angle AXY is theta

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Q. Two small rings O and O' are put two vertical stationary rods AB and A'B', respectively. One end of an inextensible thread is tied at point A'. The thread passes through ring O' and its other end is tied to ring O. Assuming that the ring O' moves downwards at a constant velocity

V_{1}

determine the velocity

V_{2}

of the ring when

∠ A O O^{'} = α

Q. Two small rings

O

and

O^{'}

are put on two vertical stationary rods

A B

and

A^{'} B^{'}

, respectively. One end of an inextensible thread is tied at a point

A^{'}

. The thread passes through ring

O^{'}

and its other end is tied to ring

O

. Assuming that ring

O^{'}

moves downwards at a constant velocity

v_{1}

, then velocity

v_{2}

of the ring

O

, when

∠ A O O^{'}

α

, is

Two small rings O and O' are put on two vertical stationary rods AB and A'B', respectively. One end of an inextensible thread is tied at point A'. The thread passes through ring O' and its other end is tied to ring O. Assuming that ring O' moves downwards at a constant velocity $v_{1}$ , then velocity $v_{2}$ of the ring O, when $∠$ AOO' = $α$ ,

Q. A small ring of mass

m

attached at an end of a light string of length

l = 0.6 m

the other end of which is tied to a block

B

of mass

2 m

. The ring is free to move on a fixed smooth horizontal rod. Find the velocity of A ring and tension in the string when it becomes vertical.

Q. A ring which can slide along the rod is kept at the mid point of a smooth rod of length L. The rod is rotated with a constant angular velocity

ω

about vertical axis passing through one of its ends. Ring is released from mid point. Find the velocity of the ring when it just leave the rod.

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