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calculus

a toy wagon is pulled by exerting a force of 15 pounds on a handle that makes a 30 degree angle with the horizontal. find the work done in pulling the wagon 50 feet.

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  1. We want the force in the direction of motion
    F = 15 cos 30
    then work = force times the distance the force acts
    = 50 * 15 cos 3
    in foot pounds

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  2. thank you..

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  3. a 20 kg wagon is pulled along the level ground by a rope inclined at 30 degrees above the horizontal. A friction force of 30 N opposes the motion. How large is the pulling force if the wagon is moving with a constant speed?

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