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Unformatted text preview: Create assignment, 00224, Homework 1, Jan 10 at 5:45 pm 1 This print-out should have 9 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. The due time is Central time. Serway CP 13 18 13:02, trigonometry, numeric, > 1 min, wording-variable. 001 A 50 g object is attached to a horizontal spring with a spring constant of 10 N / m and released from rest with an amplitude of 25 cm. What is the velocity of the object when it is halfway to the equilibrium position if the surface is frictionless? Correct answer: 3 . 06186 m / s. Explanation: Let : m = 50 g = 0 . 05 kg , k = 10 N / m , and A = 25 cm = 0 . 25 m . The speed is v = r k m ( A 2- x 2 ) = s 10 N / m . 05 kg [(0 . 25 m) 2- (0 . 125 m) 2 ] = 3 . 06186 m / s . keywords: Pendulum on the Moon 13:05, trigonometry, numeric, > 1 min, nor- mal. 002 A pendulum oscillating on the moon has the same period as a(n) 1 m pendulum oscillating on Earth....
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