A technician is testing a computer-controlled, variable-speed motor. She attaches a thin disk to the motor shaft, with the shaft at the center of the disk. The disk starts from rest, and sensors attached to the motor shaft measure the angular acceleration αzαz of the shaft as a function of time. The results from one test run are shown in the figure attached. Through how many revolutions has the disk turned in the first 5.0 s? Can you use the equation θ=θ0+ω0zt+12αzt2θ=θ0+ω0zt+12αzt2? What is the angular velocity, in rad/srad/s, of the disk at tt = 5.0 s? What is the angular velocity, in rad/srad/s, of the disk when it has turned through 2.00 rev. Express your answer in radians per second to two significant figures.
A technician is testing a computer-controlled, variable-speed motor. She attaches a thin disk to the motor shaft, with the shaft at the center of the disk. The disk starts from rest, and sensors attached to the motor shaft measure the angular acceleration αzαz of the shaft as a function of time. The results from one test run are shown in the figure attached. Through how many revolutions has the disk turned in the first 5.0 s? Can you use the equation θ=θ0+ω0zt+12αzt2θ=θ0+ω0zt+12αzt2? What is the angular velocity, in rad/srad/s, of the disk at tt = 5.0 s? What is the angular velocity, in rad/srad/s, of the disk when it has turned through 2.00 rev. Express your answer in radians per second to two significant figures.
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A technician is testing a computer-controlled, variable-speed motor. She attaches a thin disk to the motor shaft, with the shaft at the center of the disk. The disk starts from rest, and sensors attached to the motor shaft measure the
Through how many revolutions has the disk turned in the first 5.0 s?
Can you use the equation θ=θ0+ω0zt+12αzt2θ=θ0+ω0zt+12αzt2?
What is the
What is the angular velocity, in rad/srad/s, of the disk when it has turned through 2.00 rev.
Express your answer in radians per second to two significant figures.
Transcribed Image Text:a, (rad/s2)
7
6.
4
3
2.
1.0
2.0
(s)
5.0 6,0
3.0
4.0
寸
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