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The pulleys and string are massless No f...

The pulleys and string are massless No friction on the inclined plane. The inclined plane is fixed. The mass of block A is 0.4 kg. The mass of block B is 0.3 kg. The angle of inclination of the inclined plane is `60^(@)` Find the normal reaction on A offered by inclined surface during its motion.

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Knowledge Check

  • The acceleration of 10 kg block on the inclined plane is

    A
    zero
    B
    `4 m//s^(2)`
    C
    `6 m//s^(2)`
    D
    None of these

  • A block of mass m is lying on an inclined plane. The coefficient of friction between the plane and the block is mu . The force (F_(1)) required to move the block up the inclined plane will be:-

    A
    `mg sin theta+mumg cos theta`
    B
    `mg cos theta-mumg sin theta`
    C
    `mg sin theta-mumg cos theta`
    D
    `mg cos theta+mumg sin theta`

  • A block of mass m rests on a rough inclined plane. The coefficient of friction between the surface and the block is µ. At what angle of inclination theta of the plane to the horizontal will the block just start to slide down the plane?

    A
    `theta=tan^(-1)mu`
    B
    `theta=cos^(-1)mu`
    C
    `theta=sin^(-1)mu`
    D
    `theta=sec^(-1)mu`

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