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Unformatted text preview: lenoir (wml297) homework 16 Turner (58220) 1 This print-out should have 12 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 (part 1 of 3) 10.0 points A block of mass 0 . 5 kg is pushed against a hor- izontal spring of negligible mass, compressing the spring a distance of x as shown in the fig- ure. The spring constant is 290 N / m. When released, the block travels along a frictionless, horizontal surface to point B , the bottom of a vertical circular track of radius 0 . 6 m, and continues to move up the track. The speed of the block at the bottom of the track is 12 m / s, and the block experiences an aver- age frictional force of 6 N while sliding up the track. The acceleration of gravity is 9 . 8 m / s 2 . m k R v B v T T B x What is x ? Answer in units of m. 002 (part 2 of 3) 10.0 points What is the speed of the block at the top of the track?...
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- Spring '10