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    holaa's Avatar
    holaa Posts: 2, Reputation: 1
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    #1

    Oct 18, 2011, 05:56 PM
    Solving a block and incline Physics problem with an unknown angle
    A factory machine is required to pull heavy crates up a frictionless ramp. If the machine's motor can exert a maximum force of 1100 N, and the crates have a mass of 1800 kg, what is the maximum angle the ramp can set at for the machine to move the crates?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Oct 19, 2011, 05:54 AM
    The force the motor has to overcome is the component of the crate's weight W that is along the direction of the ramp (tangential to the inclined plane). If the ramp is inclined at an angle , the components of the crate's weight are normal to the inclined plane and tangential to the incline. Can you take it from here?
    holaa's Avatar
    holaa Posts: 2, Reputation: 1
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    #3

    Oct 19, 2011, 04:11 PM
    Thanks! I got it! (:
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