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A man has fallen into a ditch of width d...

A man has fallen into a ditch of width d and two of his friends are slowly pulling him out using a light rope and two fixed pulleys as shown in figure. Indicate the correct statements : (assume both the friends apply equal forces of equal magnitude)

A

The force exerted by both the friends decreases as the man move up

B

The force applied by each friend is `(mg)/(4h) sqrt(d^(2)+4h^(2))` when the man is at depth of `h`

C

The force exerted by both the friends increases as the man moves up

D

The force applied by each friend is `(mg)/(h) sqrt(d^(2)+h^(2))`

Text Solution

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The correct Answer is:
b,c
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ANURAG MISHRA-FORCE ANALYSIS-Level-2
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  2. In the figure the block A,B and C of mass m each, have acceleration a(...

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  3. A man has fallen into a ditch of width d and two of his friends are sl...

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  4. In the figure shown m(1)=1 kg,m(2)=2kg, pulley is ideal. At t=0, both ...

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  5. In the following figure all surfaces are smooth. The system is release...

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  6. The above question 26, the normal force acting, betweent :

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  7. In the figure shown m(1)=5 kg,m(2) = 10 kg & friction coefficient betw...

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  8. A block of mass 0.1 kg is kept on an inclined plane whose angle of inc...

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  9. In the situatiobn shown in the figure the friction coefficient between...

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  10. In the arrangement shown, coefficient of friciton for all the surfaces...

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  11. A triangular block mass m rests on a fixed rough inclined plane having...

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  12. A body is moving down a long inclined plane of inclination 45^(@) with...

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  13. Suppose F,F(N) & f are the magnitudes of the contact force, normal for...

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  14. Block A is placed on block B. There is friction between the blocks, wh...

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  15. In the shown diagram m(1)=m(2)=4kg and m(3)=2 kg. Coefficient of frict...

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  16. O is a point at the bottom of a rough plane inclined at an angle alpha...

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  17. In above question 37 :

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  18. The friction coefficient between the plank and floor is mu. The man ap...

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  19. In the figure shown, friction exists between wedge and block and also ...

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  20. A block is projected with velocity v(0) up the inclined plane from its...

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