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Figure shows s small mass m hanging over...

Figure shows s small mass m hanging over a pulley. The other end of the thread is being pulled in horizontal direction with a uniform speed u. Find the speed with which the mass ascend at the instant the string makes an angle `theta` with the horizontal.

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The correct Answer is:
`[u cos theta]`
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PHYSICS GALAXY - ASHISH ARORA-KINEMATICS-Practice Exercise
  1. In example 1.49 find the velocity of the mid point of the rod in terms...

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  2. Two rings O and O' are put on two vertical stationary rods AB and A'B'...

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  3. An aircraft is descending to land at an airport in the morning. The ai...

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  4. Figure shows s small mass m hanging over a pulley. The other end of th...

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  5. A man of height 1.2 m walks away from a lamp hanging at a height of 4....

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  6. Find the speed of the box-3, if box-1 and box-2 are moving with speeds...

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  7. A smooth ring A of mass m can slide on a fixed horizontal rod. A strin...

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  8. Figure shows a pulley over which is string passes and connected to two...

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  9. Find the relation in the accelerations of the three masses shown in fi...

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  10. Figure (a) and (b) shows a system of two masses A and B a motor M. fin...

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  11. Find the Relation among velocities of the blocks shown in figure (a), ...

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  12. Block B shown in figure , moves downwards with a constant velocity of ...

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  13. Block C shown in figure, starts from rest and moves downward with a co...

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  14. The system shown in figure starts from rest, and each block moves with...

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  15. Find the relation among the acceleration of blocks A and B constrained...

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  16. If the wedge A shown in figure-1.93, is moving toward left with accele...

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  17. Find the speed of the block B when the wedges A and C are moving towar...

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  18. Find the acceleration of the block B as shown in figure- 1.95 (a) and ...

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  19. If the point P on string shown in figure-1.96 is pulled down with a ve...

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  20. Find the constrained relation among the acceleration of blocks A, B an...

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