A08. The energy of a simple harmonic oscillator could be doubled by increasing the amplitude by a factor of A) 0.7 B) 1.0 C) 1.4 D) 2.0 E) 4.0
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- КА kB = wwwwww.. Lo = ellele Spring A N/m ниши N/m LA The two springs A and B depicted above are made of different materials and have different spring constants kд and k. The springs happen to have the same natural length Lo = 0.1 m. m When a mass m = 0.46 kg is hung from spring A, spring A oscillates for a short time then settles down to a stretched length LA = 0.23 m. When an identical mass is hung from spring B, spring B settles down to a stretched length LB = 0.4 m. What are the spring constants kд and kg of these springs, measured in N/m? Lo Spring B LB mmmmmm8. A mass of 240 g oscillates on a horizontal frictionless surface at a frequency of 3.0 Hz and with amplitude of 4.5 cm. (a) What is the effective spring constant for this motion? (b) How much energy is involved in this motion?3) OK, once again we have a pendulum, this time of length 1.94 m, which you release from rest at an angle of 59.1 degrees to the vertical. What will be the speed of the pendulum at the instant it reaches an angle of 29.6 degrees above the vertical? Question 2 options: 6.88 m/s 3.68 m/s 4.30 m/s 2.23 m/s 4) This, the length of the pendulum is 2.17 m. Now you start with the pendulum at 10.2 degrees with respect to the vertical, but rather than releasing it from rest, you give it a push downward. It swings to the other side, and reaches a maximum angle of 34.0 degrees with respect to the vertical. What must have been the initial speed of the pendulum just after you pushed it? 2.70 m/s 0.82 m/s 3.51 m/s 2.57 m/s
- A 10.0-kg object is suspended from a spring with k = 16 N/m. The mass is pulled 1.25 m downward from its equilibrium position and allowed to oscillate. What is the maximum kinetic energy of the object??A mass on a spring oscillates with an amplitude 0.12 m and a period of 1.0 s. What will be the acceleration of the mass at t = 0.50s? A) 4.7 m/s² B) -4.7 m/s² C) 0.12 m/s² D) 0 m/s?A mass attached to a spring vibrates with SHM of frequency 5Hz and amplitude 5cm. What is the maximum speed that the mass can attain? A)1.75m/s B)0.79m/s C)9.78m/s D)1.57m/s E)0.25m/s