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A solid disk of mass m1 = 9.1 kg and radius R = 0.25 m is rotating with a constant angular velocity of ? = 33.0 rad/s. A thin rectangular rod with mass m2 = 3.5 kg and length L = 2R = 0.5 m begins at rest above the disk and is dropped on the disk where it begins to spin with the disk.
1) What is the final angular momentum of the rod and disk system?
2) The rod took t = 6.5 s to accelerate to its final angular speed with the disk. What average torque was exerted on the rod by the disk?
A hollow, thin-shelled ball of mass m rolls along a horizontal surface with a translational speed of v. What percent of its total kinetic energy is translational
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A square, 0.141 m on a side, is mounted so that it can rotate about an axis that passes through the center of the square. What is the magnitude of the maximum torque that such a force could produce
A person who weighs 628 N is riding a 91.6 N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in each tire is 7.51E+5 Pa, what is the area of contact between each tire and the..
Two blocks of mass 2kg and 4 kg are held together by a string force of 10N is applied on 2kg and 20N on 4kg find the tension in the string connected between two blocks
A 47-g golf ball is driven from the tee with an initial speed of 52.0 m/s and rises to a height of 24.2 m.
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At rest, a car's horn sounds at a frequency of 480 Hz. The horn is sounded while the car is moving down the street. A bicyclist moving in the same direction with one-third the car's speed hears a frequency of 470 Hz. What is the speed of the car?
q1. a crate with mass 35.5 initially at rest on a warehouse floor is acted on by a net horizontal force of 120. what
two workers push horizontally in the same direction on a 250 kg wooden crate that is on a wooden floor. What total force must they exert to start the crate moving
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