Monday
July 28, 2014

Homework Help: physics

Posted by Dan on Wednesday, October 19, 2011 at 4:01pm.

A block is hung by a string from the inside roof of a van. When the van goes straight ahead at a speed of 28.9 m/s, the block hangs vertically down. But when the van maintains this same speed around an unbanked curve (radius = 144 m), the block swings toward the outside of the curve. Then the string makes an angle with the vertical. Find .

This is in a section above centipetal force and/or centripetal acceleration, if that helps.

F_c = mv^2/r
a_c = v^2 /r

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