Physics: Force and Rotational Motion

Physics
Tutor: None Selected Time limit: 1 Day

A 59.0-kg ice skater is moving at 3.93 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.870 m around the pole.

(a) Determine the magnitude of the force exerted by the horizontal rope on her arms. (b) Compare this force with her weight. 

Jun 30th, 2015

Thank you for the opportunity to help you with your question!

A)  F=( m*v^2)/r
F= (59*(3.93)^2)/0.87

F= 1047 N

B) 

w=mg

w= 59(9.8)

w= 578 N

force > weight

1047N > 578

Weight is almost half of the exerted force on the rope

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Jun 30th, 2015

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