Ex. 53: A coin just remains on a disc rotating at 120 r.p.m. when kept at a distance of 1.5 cm from the axis of rotation. Find the coefficient of friction between the coin and the disc.
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Q: At takeoff a commercial jet has a 70.0 m/s speed. Its tires have a diameter of 0.400 m. (a) At how…
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Q: An LP record rotates at 33.33 revs/min. A penny is placed flat on the record a distance 8cm from the…
A: Given: Angular velocity, ω=33.33 revs/min Distance, r=8 cm=0.08 m Static coefficient friction=μs
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Q: An LP record rotates at 33.33 revs/min. A penny is placed flat on the record a distance 8cm from the…
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Q: Ex. 54: A coin just remains on a disc rotating at a steady rate of 180 r.p.m. A coin is kept at a…
A: Solution:-Given thatN=180 rpmr=2 cm=0.02 m
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Q: An LP record rotates at 33.33 revs/min. A penny is placed flat on the record a distance 8cm from…
A: For penny to remain stationary the centripetal force should be equal to the friction force.
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