Physics Practice Problems Motion Along Curved Paths Practice Problems Solution: A small rock of mass m is attached to a strong str...

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Solution: A small rock of mass m is attached to a strong string and whirled in a vertical circle of radius R. When the rock is at the lowest point in its path, the tension in the string is five times the weight of the rock. At this point the speed of the rock isA) √2gRB) √3gRC) 2√gRD) 3√gRE) √5gRF) √6gRG) None of the above answers

Problem

A small rock of mass m is attached to a strong string and whirled in a vertical circle of radius R. When the rock is at the lowest point in its path, the tension in the string is five times the weight of the rock. At this point the speed of the rock is

A) √2gR

B) √3gR

C) 2√gR

D) 3√gR

E) √5gR

F) √6gR

G) None of the above answers