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A force acting on a body of mass 2 kg va...

A force acting on a body of mass 2 kg varies with time as shown in fig.5.11. Find impulse of the force.

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Knowledge Check

  • Power of a force acting on a block varies with time t as shown in figure. Then, angle between force acting on the block and its velocity is

    A
    acute at = 1 s
    B
    `90^(@)` at t = 3 s
    C
    obtuse at t = 7 s
    D
    change in kinetic energy from t = 0, to t = 10 s is 20 J

  • The kinetic energy of a body moving along a straight line varies with time as shown in figure. The force acting on the body:

    A
    zero
    B
    constant
    C
    directly proportional to velocity
    D
    inversely proportional to velocity

  • The forces acting on an object of mass 2 kg are shown in the fig. If the body moves horizontally then find acceleration if force P is 400 N.

    A
    `50" "m//s^(2)`
    B
    `10" "m//s^(2)`
    C
    `350" "m//s^(2)`
    D
    `60" "m//s^(2)`

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    Force acting on a particle varies with displacement as shown is Fig. Find the work done by this force on the particle from x=-4 m to x = + 4m. .

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