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A physics student is standing on an initially motionless,frictionless turntable with rotational inertia 0.31kg·m2. He's holding a wheel of rotational inertia0.22 kg·m2 spining at 125 rpm about a vertical axis, as we showed in Fig.11.8. When he turns the wheel upside down, student and turntablebegin rotating at 79 rpm.
a) What is the student's mass, considering him to be acylinder 30 cm in diameter?
b) How much work did he do in turning the wheel upside down? Neglect the distance between the axes of the turntable and wheel.
You and your friend are standing on a horizontal platform that is rotating about its center. What is the difference between your angular speed (in rad/s) and your friend's speed
A coin rests 14.60 cm from the center of turntable. The coefficient of static friction between the coin and turntable surface is 0.350. The turntable starts from rest at t = 0 and rotates with the constant angular acceleration of 0.8400 rad/s2.
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then collides with a spring whose spring constant is 250 N/m. angle is 30 degrees. Illustrate what is the maximum compression of the spring?
A power plant delivers energy at 880 MW using steam turbines. The steam goes into the turbines superheated at 625 K, What is the entropy increase per kilogram of the downstream river water
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A second converging lens of focal lenght 12 cm is placed to the right of the first lens. If the final image of the combined lens system is virtual and 15 cm from the second lens, then compute the distance between the two lenses
A golf ball strikes a hard, smooth floor at an angle of 29.0 ° and, as the drawing shows, rebounds at the same angle. What is the magnitude of the impulse applied to the golf ball by the floor
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