February 21, 2017

Homework Help: physics

Posted by brain on Saturday, February 4, 2012 at 5:40pm.

1.A merry-go-round makes one complete revo-
lution in 12.2 s. A 49.4 kg child sits on the
horizontal floor of the merry-go-round 2.3 m
from the center.
Find the child’s acceleration. The accelera-
tion of gravity is 9.8 m/s2 .
Answer in units of m/s2

2.Find the horizontal force of friction that acts
on the child.
Answer in units of N

3.What minimum coefficient of static friction is
necessary to keep the child from slipping?

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