Homework Help: Physics

Posted by Laura on Tuesday, October 5, 2010 at 3:29am.

A skier of weight 700N is pulled at constant speed up a smooth slope, of inclination 15 degrees, by a force of magnitude P N acting at 25 degrees upwards from the slope. Find the value of P.

Physics - drwls, Tuesday, October 5, 2010 at 3:41am
Since there is no acceleration or friction, the component of P along the direction of motion equals the component of the weight in the oppostie direction.

P cos25 = W sin15

Solve for P

W is the skier's weight in newtons

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