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A man of mass M stands on a.box of mass ...

A man of mass M stands on a.box of mass m as shown in the Fig. 2E. l (a). A rope attached to 'the box and passing over an overhead pulley allows the man to raise himself and the box by , pulling the rope downward.
(i) With what minimum force should the ' man pull the rope so as to prevent himself , from falling down.
(ii) If the man pulls the rope with a force F greater than the minimum force, then determine the acceleration of the (man + box) system.
(iii) Determine. the normal reaction between the man and the trolley.

Answer

Step by step text solution for A man of mass M stands on a.box of mass m as shown in the Fig. 2E. l (a). A rope attached to 'the box and passing over an overhead pulley allows the man to raise himself and the box by , pulling the rope downward. (i) With what minimum force should the ' man pull the rope so as to prevent himself , from falling down. (ii) If the man pulls the rope with a force F greater than the minimum force, then determine the acceleration of the (man + box) system. (iii) Determine. the normal reaction between the man and the trolley. by PHYSICS experts to help you in doubts & scoring excellent marks in Class 11 exams.

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Knowledge Check

  • A man pulls a bucket of water from a depth of h from a well. If the mass of the rope and that of bucket full of water are m and M respectively, the work done by the man is :

    A
    `(M+m)gh`
    B
    `(M+m/2)gh`
    C
    `((M+m)/2)gh`
    D
    `(M/2+m)gh`

  • In the given diagram, with what force must the man pull the rope to hold the plank in position? Weight of the man is 60 kg. Neglect the weight of plank, rope and pulley.

    A
    150 N
    B
    300 N
    C
    600 N
    D
    120 N

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