Homework Help: Physics

Posted by Physics on Wednesday, September 23, 2009 at 3:43pm.

A small block of mass m rests on the sloping side of a triangular block of mass M which itself rests on a horizontal table.

Assuming all surfaces are frictionless, determine the magnitude of the force ->F that must be applied to M so that m remains in a fixed position relative to M (that is, m doesn't move on the incline). [Hint: Take x and y axes horizontal and vertical.]

How would do this problem? Why take x and y axes horizontal and vertical?

Physics - wasserman, Monday, September 27, 2010 at 6:34pm
(M+m)*g*tan(theta)

dont know how i got it but its right

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