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Conceptual Physics 5.1 Oscillations Class Set DO NOT WRITE ON THIS COPY Version 3 Force of a spring F's (N) Spring constant k (N/m) F= kx k = F s Displacement (spring stretch) (m) X x = - K Period: Time of one oscillation T (s) T =- time Mass m (kg) oscillations T =- Spring constant k (N/m) Length: Length of pendulum string L (m) IS= 2n- m Tp= 27 Gravity: Acceleration of gravity g (m/s2) Frequency: Oscillations per second f (Hz) oscillations time 1 = T 1. Increasing the mass, m , attached to a spring will A. increase the period B. decrease the period C. have no effect on the period 2. Determine the frequency of oscillation of a spring that has a period of 0.25 s. A. 1 Hz B. 2 Hz C. 3 Hz D. 4 Hz 3. Increasing the length, L , of a pendulum will A. increase the period B. decrease the period C. have no effect on the period 4. A force of 12 N acts on a spring that has a spring constant of 36 N/m. How far is the spring stretched? A. 0.333 m B. 1.81 m C. 3 m D. 432 m 5. A spring with a mass attached oscillations 25 times in 10 seconds. What is the frequency of the oscillations? A. 0.40 HZ B. 2.5 Hz C. 15 Hz D. 250 Hz 6. Increasing the gravity, g , acting on a pendulum will A. increase the period B. decrease the period C. have no effect on the period 7. A device in simple harmonic motion experiences 30 oscillations in 15 seconds. What is the period of these oscillations? C. 15 s D. 450 s A. 0.5 s B. 2 s 8. Determine the period of oscillation of a spring that has a frequency of 20 Hz. C. 2.0 s D. 10 s A. 0.05 s B. 0.50 s 9. Increasing the mass, m , attached to a pendulum will A. increase the period B. decrease the period C. have no effect on the period