Question
A 30 kg child sits on the seat of a motionless swing, with his feet not touching the ground. The chains holding the swing are
A 30 kg child sits on the seat of a motionless swing, with his feet not touching the ground. The chains holding the swing are 3.0 m long.
(a) What is the tension in each chain? Neglect the mass of the seat and the chains.
F=ma
F=0
Fn-mg = 0
Fn = mg
Fn = (30)(9.80)
Fn = 294 N
(b) The child starts swinging, so that his maximum speed (when he is nearest the ground) is now 5.0 m/s. What is the tension in each chain under these circumstances?
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Fundamentals of Ethics for Scientists and Engineers
Authors: Edmund G. Seebauer, Robert L. Barry
1st Edition
9780195698480, 195134885, 195698487, 978-0195134889
