In simple harmonic motion, the magnitude of the magnitude of the acceleration is

Question

In simple harmonic motion, the magnitude of the magnitude of the acceleration is: A) constant B) proportional to the displacement C) inversely proportional to the displacement D) greatest when the velocity is greatest E) never greater than g A Mock attached to a spring oscillates in simple harmonic motion mo0tion along the x axis. The limits of its motion are x = 10 cm and x = 50 cm and it goes from one of these extremes to the other in 0.25 s. Its amplitude and frequency at=re: A) 40cm, 2 Hz B) 20 cm, 4 Hz C) 40 cm. 2 Hz D) 25 cm. 4 Hz E) 20 cm. 2 Hz In simple harmonic motion, the magnitude of the acceleration is greatest when: A) the displacement is zero B) the displacement is maximum C) the speed is maximum D) the force is zero E) the speed is between zero and its maximum

Explanation / Answer

15)

In simple harmonic motion (SHM), the acceleration of the object is directly proportional to its displacement from its equilibrium position.

Answer is (B)

16)

Here Amplitude is A = (50-10)/2 = 20 cm

given T = 2*0.25 = 0.5 sec

so f =1/T = 2 s-1 = 2 Hz

Answer is (E)

17) Since the acceleration of the object is directly proportional to its displacement

Answer is (B)

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