Ch6 HW1 S2008 - Ch6 HW1 S2008 10:30 AM Web Assign Ch6 HW1...

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4/25/08 10:30 AM Ch6 HW1 S2008 Page 1 of 3 http:[email protected][email protected] Ch6 HW1 S2008 (Homework) KRISTIN SEILOFF Instructor: Jennifer Curtis Description Spring potential energy; interatomic potential energy Instructions Reading: Sections 6.1-6.2 Sections 6.7-6.10 Web Assign Current Score: 16 out of 16 Due: Wednesday, March 5, 200812:00 PM EST 1. 4/4 points | 1/4 submissions A horizontal spring with stiffness 0.4 N/m has a relaxed length of 15 cm ( 0.15 m). A mass of 21 grams ( 0.021 kg) is attached and you stretch the spring to a total length of 27 cm ( 0.27 m). The mass is then released from rest. What is the speed of the mass at the moment when the spring returns to its relaxed length of 15 cm ( 0.15 m)? v = .524 0.524 m/s 2. [MI02 5.RQ.03.] 4/4 points | 1/4 submissions A spring has a relaxed length of 6 cm and a stiffness of 150 N/m. How much work must you do to change its length from
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Ch6 HW1 S2008 - Ch6 HW1 S2008 10:30 AM Web Assign Ch6 HW1...

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