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Quiz9_Sols - Physics 53 Quiz#921 Fall 2007 Name Recit...

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Unformatted text preview: Physics 53 Quiz #921 Fall 2007 Name Recit. Section Circle the correct answer: [2 points for each part] Consider a mass m attached to a spring with constant k and oscillating on a frictionless horizontal surface. If the displacement of the mass as a function of time t is given by x(t) = A cos(cot + (p) with A = 4.00 cm, (1) = 371; 3'], (1) == 7t/2, then 1. the oscillations start at t = 0 at: a) x = —4 cm. d) )6: +4 cm. b) x = —2 cm. c) x = +2 cm. 2. the total distance traveled by the mass in one cycle is: a) 2.00 cm. c) 8. 00 cm. b) 4.00 cm. 6 l6 0 cm 3. the period of oscillation is: a) 1.33 s. d) (2/370 s. b) 0.750 s. e) (3715/2) 3. [email protected] 0.667 s. 4. the maximum speed of the mass m is \ 1273 cm/s. d) 6.00 cm/s. b) 67: cm/s. e) 3.00 cm/s. c) 371; cm/s. 5. the kinetic energy of the mass and the potential energy in the spring are equal to each other when , x=0 . a) cm ~§® x=+ 8cm. b) x=8/37tcm. d) x=2cm. Physics 53 Quiz #91) Fall 2007 Name Recit. Section Circle the correct answer: [2 points for each part] Consider a mass m attached to a spring with constant [C and oscillating on a frictionless horizontal surface. If the displacement of the mass as a function of time I is given by x(t) = A cos((nt + (1)) with A = 6.00 cm, 0) = 47E 8", (1) = ~7t/2, then 1. the oscillations start at f = 0 at: a) x = +6 cm. d) x = —6 cm. b) x = +3 cm. x = 0 cm. c) x = —3 cm. R) . the total distance traveled by the mass in one cycle is: ) 48.0 cm. c) 12.0 cm. L 24.0 cm. d) 6.00 cm. 3. the period of oscillation is: ~ 0.500 s. d) (2/75) s. ) 1.005. e) (7t/2)s. c) 2.00s. 4. the maximum speed of the mass m is a) 121: cm/s. d) 6.00 cm/s. Q 247t cm/s, e) 12.0 cm/s. c) 36‘“: cm/s. 5. the kinetic energy of the mass and the potential energy in the spring are equal to each other when a) x = 0 cm. b) X = 47? cm. c) x = 4 cm. [ j x = +35 cm. ...
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