Constants I Period A physical pendulum consists of an 85-cm-long, 240-g-mass, uniform wooden rod hung from a nail near one end. The motion is damped because of friction in the pivot; the damping force is Part A If the angular displacement can be written as 0 = Aet cos w't, find y. approximately proportional to d0 / dt. The rod is set in oscillation by displacing it 15 ° from its equilibrium position and releasing it. After 9.0 s , the amplitude of the oscillation has been reduced to 5.7 °. (Figure 1) Express your answer using two significant figures. Hνα ΑΣφ ? s-1 Figure < 1 of 1 Submit Request Answer Part B If the angular displacement can be written as 0 = Ae cos w't, find the approximate period of the motion. Express your answer using two significant figures. 85 cm ? T = 15° Submit Request Answer
Constants I Period A physical pendulum consists of an 85-cm-long, 240-g-mass, uniform wooden rod hung from a nail near one end. The motion is damped because of friction in the pivot; the damping force is Part A If the angular displacement can be written as 0 = Aet cos w't, find y. approximately proportional to d0 / dt. The rod is set in oscillation by displacing it 15 ° from its equilibrium position and releasing it. After 9.0 s , the amplitude of the oscillation has been reduced to 5.7 °. (Figure 1) Express your answer using two significant figures. Hνα ΑΣφ ? s-1 Figure < 1 of 1 Submit Request Answer Part B If the angular displacement can be written as 0 = Ae cos w't, find the approximate period of the motion. Express your answer using two significant figures. 85 cm ? T = 15° Submit Request Answer
Constants I Period A physical pendulum consists of an 85-cm-long, 240-g-mass, uniform wooden rod hung from a nail near one end. The motion is damped because of friction in the pivot; the damping force is Part A If the angular displacement can be written as 0 = Aet cos w't, find y. approximately proportional to d0 / dt. The rod is set in oscillation by displacing it 15 ° from its equilibrium position and releasing it. After 9.0 s , the amplitude of the oscillation has been reduced to 5.7 °. (Figure 1) Express your answer using two significant figures. Hνα ΑΣφ ? s-1 Figure < 1 of 1 Submit Request Answer Part B If the angular displacement can be written as 0 = Ae cos w't, find the approximate period of the motion. Express your answer using two significant figures. 85 cm ? T = 15° Submit Request Answer
Part C asks: If the angular displacement can be written as θ=Ae^(−γt)cosω′t, find how long it takes for the amplitude to be reduced to 1/2 of its original value.
Transcribed Image Text:Constants I Period
A physical pendulum consists of an 85-cm-long,
240-g-mass, uniform wooden rod hung from a nail
near one end. The motion is damped because of
friction in the pivot; the damping force is
approximately proportional to d0/dt. The rod is set
in oscillation by displacing it 15° from its
equilibrium position and releasing it. After 9.0 s, the
amplitude of the oscillation has been reduced to 5.7
°. (Figure 1)
Part A
If the angular displacement can be written as 0
:Ae¯n cos w't, find y.
Express your answer using two significant figures.
?
Figure
Submit
Request Answer
1 of 1
Part B
If the angular displacement can be written as 0 = Ae¯ cos w't, find the approximate period of the motion.
Express your answer using two significant figures.
85 cm
T =
i 80
= 15°
S
Submit
Request Answer
Definition Definition Angle at which a point rotates around a specific axis or center in a given direction. Angular displacement is a vector quantity and has both magnitude and direction. The angle built by an object from its rest point to endpoint created by rotational motion is known as angular displacement. Angular displacement is denoted by θ, and the S.I. unit of angular displacement is radian or rad.
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