APFIVE Normal Force in a Vertical Loop
A 0.5 kg block slides from rest down a frictionless track that includes a loop-the-loop of radius 0.2 m. If the block starts at a height of 0.8 m above the bottom of the loop, what is the normal force exerted by the track on the block at the bottom of the loop?
A
4.9 N
B
9.8 N
C
14.7 N
D
44.1 N
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