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QUIZ

11th

grade

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2.1K

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Hanadi khalil Fatayerji

6 years

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20 questions

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- 1. Multiple Choice1.5 minutes1 ptA force of 30 N stretches a very light ideal spring 0.73 m from equilibrium. What is the force constant (spring constant) of the spring?41 N/m22 N/m34 N/m46 N/m
- 2. Multiple Choice1.5 minutes1 ptA pair of trapeze performers at the circus is swinging from ropes attached to a large elevated platform. Suppose that the performers can be treated as a simple pendulum with a length of 16 m. Determine the period for one complete back and forth cycle.2 sec12 sec8 sec10 sec
- 3. Multiple Choice3 minutes1 ptA pendulum is 0.75 meters long and has a period of 4.17 seconds. The Pendulum is on an unknown planet. What is the gravity of the Unknown Planet?9.83.41.7Greater than 9.8
- 4. Multiple Choice1.5 minutes1 ptIf the length of a simple pendulum is doubled, its period will:halveincrease by a factor of sqrt(2)decrease by a factor of sqrt(2)double
- 5. Multiple Choice30 seconds1 pt
From the graph ,the spring constant is.

4.5 m

15 N

20 N/m

200 N/m

- 6. Multiple Choice1 minute1 ptWhat is the equation for frequency?f = t/nf = 1/Tf = 2 T
- 7. Multiple Choice1.5 minutes1 ptA mass-spring system can oscillate with simple harmonic motion because a compressed or stretched spring has which kind of energy?kineticmechanicalgravitational potentialelastic potential
- 8. Multiple Choice30 seconds1 ptFor a system in simple harmonic motion, which of the following is the number of cycles or vibrations per unit of time?amplitudeperiodfrequencyrevolution
- 9. Multiple Choice1.5 minutes1 ptWhat is the period on Earth of a pendulum with a length of 2.4 m?3.1 sec1.9 sec9.3 sec5.1 sec
- 10. Multiple Choice1.5 minutes1 pt
Based on your findings, which equation could best describe the pendulum’s period?

A

B

C

D

- 11. Multiple Choice1 minute1 ptA simple harmonic oscillator takes 4.8 s to undergo five complete vibrations. What is the frequency of 1cycle?1.04 s4.8 s1/4.8 s
- 12. Multiple Choice30 seconds1 ptA simple harmonic oscillator takes 4.8 s to undergo five complete vibrations. What is the period (T) of 1 cycle?4.8 s.96 s9.8 s
- 13. Multiple Choice1.5 minutes1 ptWhat is the frequency of a pendulum that has a period of 10 s?10 Hz1/1000 Hz.1 Hz
- 14. Multiple Choice1.5 minutes1 ptThe period of a pendulum may be decreased byIncreasing the mass of the bobmoving the equilibrium pointdecreasing the mass of the bobshortening the length of pendulum
- 15. Multiple Choice30 seconds1 pt
The velocity of a spring-block system vibrating along the

*y-*axis changes with time according to the equation: 𝑣(𝑡) = 2𝜋 cos(𝜋𝑡 + 𝜋). All quantities in the equation are expressed in S.I units. Consider that the object is initially at the equilibrium position. What is the amplitude of the motion of the object in meter?2/𝜋

2

2𝜋

𝜋/2

- 16. Multiple Choice30 seconds1 pt
A block of mass 2.0 kg is attached to a spring. What is the spring constant if the block’s acceleration is 13 m/s2 when it is 0.75 m away from the equilibrium position ?

35 N/m

22 N/m

12 N/m

8 N/m

- 17. Multiple Choice30 seconds1 pt
The velocity of a spring-block system vibrating along the

*y-*axis changes with time according to the equation: 𝑣(𝑡) = 2𝜋 cos(𝜋𝑡 + 𝜋). All quantities in the equation are expressed in S.I units. Consider that the object is initially at the equilibrium position. What is the maximum acceleration of the object?𝜋

2𝜋

2𝜋

^{2}𝜋/2

- 18. Multiple Choice30 seconds1 pt
The velocity of a spring-block system vibrating along the

*y-*axis changes with time according to the equation: 𝑣(𝑡) = 2𝜋 cos(𝜋𝑡 + 𝜋). All quantities in the equation are expressed in S.I units. Consider that the object is initially at the equilibrium position. What is the value of the velocity (in m/s) at the instant when the acceleration is zero?2𝜋

2𝜋

^{2}𝜋

𝜋/2

- 19. Multiple Choice30 seconds1 pt
The maximum velocity occurs where the ____.

potential energy is a maximum

kinetic energy is a minimum

displacement from equilibrium is equal to

the amplitude of 0.4 𝑚

displacement from equilibrium is equal to

zero

- 20. Multiple Choice30 seconds1 pt
An object of mass 𝑚 is attached to a horizontal spring, stretched to a displacement 𝐴 from equilibrium and released, undergoing harmonic oscillations on a frictionless surface with period 𝑇 . The experiment is then repeated with a mass of 4𝑚

*.*What’s the new period of oscillation?2T

T

4T

T√2

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