physics

A block of mass 3kg which is on a smooth inclined plane making an angle of 30° to the horizontal is connected by a cord passing over a light frictionless pulley to a second block of mass 2kg hanging vertically. What is the acceleration of each block and what is the tention of thr cord?

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  1. The 2 kg hanging block:
    x defined down
    m a = m g - T
    T = m (g-a)
    T = 2 (9.81-a)

    The 3 kg bock on the slope:
    now x is up the slope
    T - m g sin 30 = m a
    T = m (g/2+a)
    T = 3 (4.9-a)
    your turn.

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  2. And is in complete

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  3. Stupid answer it's wrong

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  4. m1gsin30=3×9.8×1/2=14.7 (take g=9.8)
    m2g=2×9.8=19.6
    14.7-T=3a --------(1)
    T-19.6=2a ---------(2)
    By solving 1 and 2 we get a=-4.9
    (-) indicates direction
    a=4.9
    By substituting a=4.9 in any equation,we get T=17.6N

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  5. a=0.98m/s2

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  6. stupid donkey wrong answer

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