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Math Help - Force Problem

  1. #1
    Del
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    Force Problem

    Calculate the force (in Newtons) required to push a 20kg wagon up a 0.5 radian inclined plane. One Newton (N) is equal to 1, and the force due to gravity on the wagon is , where is the mass of the wagon, and is the acceleration due to gravity (9.8). Please ignore friction in this problem.

    Please help!
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  2. #2
    o_O
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    Don't think you need calculus for this.

    As you push the wagon up the incline, the component of gravity parallel to the incline ( F_{||} = mg\sin 0.5) is what counteracts the force you're providing. So, the force you provide must be equal to this (in which case the wagon would be moving at a constant velocity) or greater (in which there will be a net force accelerating the wagon upward).
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  3. #3
    Del
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    I'm inputting [20(9.8)sin(0.5)] into the program accepting my answers and it is claiming it incorrect. Am I doing something wrong?

    Edit: The program is at fault, thanks for the help!
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