Homework Help: physics

Posted by gigi on Wednesday, January 12, 2011 at 4:41am.

a man pulls a 500 N block up a plane inclined 30 degrees with the horizontal with a force 300 N parallel to the plane. what net force tends to pull the block up the plane?

physics - drwls, Wednesday, January 12, 2011 at 8:01am
300 - 500 sin 30 = 50 N

The 500 sin 30 is the component of the weight down the plane.

There would in most cases also be a friction force opposite to the direction of motion. It would further reduce the net force up the plane.

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