physics

A block of mass m1=3.70kg on a frictionless plane inclined at angle 30 deg is connected by a cord over a massless, frictionless pulley to a second block mass m2= 2.30kg. What is...
a) The magnitude of the acceleration of each block?
b) The direction of the acceleration of the hanging block?
c) The tension in the cord?

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  1. LOL - I guess unless the string breaks they better have the same acceleration

    force of m1 down slope =
    3.7 g sin 30 = 1.85 g

    force of m2 the other way = 2.3 g

    net force = (2.3 -1.85)g
    = .45 * 9.81 = 4.41 N block 2 wins and heads straight down, block 1 heads up slope

    a = 4.41 /(3.7+2.3) = .736

    block 1 up, block 2 down

    look at block 2
    2.3 a = 2.3(9.81) - T
    T = 2.3 (9.81 -.736)

    T = 20.9 Newtons tension

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  2. This didn't work for me!!!!

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