Homework Help: physics

Posted by Jessica on Saturday, February 18, 2012 at 4:21pm.

A 32.2-kg child swings on a rope with a length of 6.06 m that is hanging from a tree. At the bottom of the swing, the child is moving at a speed of 4.2 m/s. What is the tension in the rope?

physics - Damon, Saturday, February 18, 2012 at 5:15pm
force up on child = T
force down on child = mg

net force up on child F = T-mg
F = m a
T - mg = m (v^2/R)

T = m (g + v^2/R)
physics - Anonymous, Sunday, February 19, 2012 at 11:21am
Thnks :)

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