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- A block of mass m is
released from rest on a
frictionless surface at a
height H above ground
level as shown.
m
T
H
(a) Find the speed of the block at points A, B, and C.
(b) What is the normal force acting on the block at point C?
(c) Find H such that the block barely stays in contact with the track at point T. Answer
in terms of R

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