Vertical Oscillation Video Lessons

Concept

# Problem: 1. What is the period of a 693 cm long pendulum with a bob of mass 68.0 kg? Assume the acceleration due to gravity is 9.8 m/s^2.a. 6.28 hzb. 5.28 secc. 7.47 hzd. 7.47 sec2. -Aω^2 cos(ωt) is the expression for:a. Accelerationb. Velocityc. Displacementd. None of the above

###### FREE Expert Solution

1.

The period is expressed as:

$\overline{){\mathbf{T}}{\mathbf{=}}{\mathbf{2}}{\mathbf{\pi }}\sqrt{\frac{\mathbf{L}}{\mathbf{g}}}}$, where L is length and g is the acceleration due to gravity.

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###### Problem Details

1. What is the period of a 693 cm long pendulum with a bob of mass 68.0 kg? Assume the acceleration due to gravity is 9.8 m/s^2.
a. 6.28 hz
b. 5.28 sec
c. 7.47 hz
d. 7.47 sec

2. -Aω^2 cos(ωt) is the expression for:
a. Acceleration
b. Velocity
c. Displacement
d. None of the above