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Whole system shown is at rest. Pulley an...

Whole system shown is at rest. Pulley and string are massless. Net force on the pulley by the string is?

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In the system shown in the figure all surfaces are smooth, pulley and string are massless. The string between the two pulleys and between pulley and block of mass 5 m is parallel to the incline surface of the block of mass 4 m. The system is released from rest. Find the acceleration of the block of mass 4 m . ["tan" 37^(@) = (3)/(4)]

Find the accelerations of two blocks. Assume pulleys and strings are massless and frictionless. Also assume the string to be inextensible.

Knowledge Check

  • In the shown mass pulley system, pulleys and string are massless. The one end of the string is pulled by the force F = mg. The acceleration of the block will be :

    A
    `g//2`
    B
    0
    C
    g
    D
    3g

  • In the shown mass pulley system, pulleys and string are massless. The one end of the string is pulleed by the force F=2mg . The acceleration of the block will be

    A
    `(g)/(2)`
    B
    0
    C
    Greater than `vecv`
    D
    3g

  • An arrangement of spring , strings, pulley and masses is shown in the figure . the pulley and the String are massless and Mgtm . the spring is light with spring constant k . If the string Connecting m to the ground detached , then immediately after detachment

    A
    the magnitude of te acceleration of is zero and of `M` is
    B
    the magnitude of the acceleration of `m` is `(M-m) g//m` and that of `M` is zero
    C
    the accelerations of both masses are same
    D
    the elongation in the spring is (`M-m) g//k`

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