Homework Help: Physics

Posted by Anonymous on Sunday, October 17, 2010 at 8:45pm.

6 J of work is needed to push an object of mass 2 kg from point A to point B of the frictionless inclined plane. If the angle of inclination is 30°, the height of the plane is h, what is the length s of the inclined plane?

Physics - drwls, Sunday, October 17, 2010 at 8:56pm
The weight is M g = 19.6 N

(Weight)* h = 6 J = work done
Solve for the elevation change, h.
That and the inclination angle will tell you the length s.

h/s = sin 30.

Get it?
Physics - Anonymous, Sunday, October 17, 2010 at 9:44pm
Yes. Thank You!

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