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Unformatted text preview: Physics 1D03 (Fall 2008), set #9 Main menu Reload Logout Current server time is Wednesday, December 10, 2008 at 16:31 Help Units Metric Prefixes Constants namsm Set 9, Due Mon, Nov 10, 2008 at 13:00 1 . [1 point, 10 tries] When a certain spring is stretched beyond its proportional limit, the restoring force satisfies the equation F=-kx+ x 3 . If k=11.0 N/m and =99 N/m 3 , calculate the work done by this force when the spring is stretched 0.106 m. Answer:-5.87e-02 J 2 . [1 point, 10 tries] A 246 g block is pressed against a spring of force constant 1.67 kN/m until the block compresses the spring 13.6 cm. The spring rests at the bottom of a ramp inclined at 59.7 to the horizontal. Using energy considerations, determine how far up the incline the block moves before it stops if there is no friction between the block and the ramp. Answer: 7.41E+00 m 3 . [1 point, 10 tries] How far up the incline does the block move before it stops if the coefficient of kinetic friction is 0.310. Answer: 6.28E+00 m 4 . [1 point, 10 tries] A 0.335 kg particle slides around a horizontal track. The track has a smooth, vertical outer wall forming a circle with a radius of 1.68 m. The particle is given an initial speed of 8.40 m/s. After one revolution, its speed has dropped to 5.70 m/s because of friction with the rough floor of the track. Calculate the energy loss due to friction in one revolution....
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