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A disc starts to rotate from rest and after completing 2 revolutions, it angular velocity
is 6.88 rad s-1. The moment of inertia of the disc about its axis of rotation is 1.24 kg
m2. Calculate
(a) The angular acceleration of the disc. Does the disc accelerate or decelerate?
(b) The torque on the disc.
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Answers: 1
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Physics, 21.06.2019 21:30, canyonrico05
One day, after pulling down your window shade, you notice that sunlight is passing through a pinhole in the shade and making a small patch of light on the far wall. you see that the patch of light seems to be a circular diffraction pattern. it appears that the central maximum is about 1 cm across and you estimate that the distance from the window shade to the wall is about 3 m. what is (a) the average wavelength of sunlight? (b) the diameter of the pinhole?
Answers: 3
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A disc starts to rotate from rest and after completing 2 revolutions, it angular velocity
is 6.88 r...
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