please answer all 9 multiple choice questions. thanks. gardner.byu.edu https://g

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please answer all 9 multiple choice questions. thanks.

gardner.byu.edu https://gardner.byu.edu/1 21 is/downloadquiz.php?lessonNumber=14 When An Object Moving In Simple Harmonic Motion Is... I Chegg.com Introduction to Newtonian Mechanics | Independent Study Final Quiz Lesson 14 Physics 121 1. If amass on a spring and a pendulum have the same pcriod on the moon where the gravity is about 1/6 of its value on the Earth, which one will run faster on the Earth? a. The mass on the spring. b. The pendulum c. They will both run the same. d. It dcpends on which one has the larger mass. 2. Which of the following quantities is at a maximum when an object in simple harmonic motion is at its maximum displacement? a. Velocity b. Acccleration. Kinetic energy None of the above d. 3. force which follows the relation F-+kx. Suppose there is an object which is subject to What will happen to the objcct if it is moved away from the cquilibrium position (x 0) and released? a It will remain stationary b. will return to the equilibrium position. c. It will move farther away with constant velocity d. I will move farther away with constant acceleration. e. It will move farther away with increasing acceleration, 4. The amplitude of an object experiencing simple harmonic motion is doubled. Which of the following is also doubled? a Maximum velocity b Total energy c. Frequency d. Period e. Everything associated with the motion will be doubled. 5. A pendulurm is made of a very long string with a hollow ball filled with water attached to the end. The ball and the water have equal masses. There is a small hole in the ball and water slowly leaks out. What happens to the frequency of the pendulum as the water leaks? a I will double. b, It will be cut in half c. It will increase by a factor of 2 d. It will decrease by a factor of 2 e. I will stay constant.

Explanation / Answer

1. time period of spring mass system is given by T = 2*pi*sqroot(k/m)

time period of pendulum, T = 2*pi*sqroot(l/g)

these two are same on moon, on earth g becomes large so time period of pendulum decreases

so pendulum runs faster on earth

answer b. the pendulum

2. AT MAXIMUM DISPLACEMENT

acceleration a = -kA/m

velocity, v = 0

KE = 0

so, answer, b. Acceleration

3. for F = kx

when the object is removed from equilibrium and released it will have an increasing acceleration away from the equilibrium position

so, option e. it will move farther away with increasing acceleration

4. for Simple harmonic motion

velocity is proportional to amplitude

energy is proportional to square of amplitude

frequency is independent of amplitude and so is time period

so, a. Maximum velocity ios also doubled

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