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A uniform cylinder whose mass is 50 kg and radius is 0.20 m is mounted so that it turns without friction on its axis, which is fixed. The cylinder is driven by a belt that wraps around its perimeter and exerts a constant torque. At t = 0, the cylinder’s angular velocity is zero. At t = 20 s, its angular speed is 300 rev/min.(a) What is the magnitude of the torque acting on the cylinder? (b) What is the magnitude of the frictional force acting on the rim of the cylinder?
A 1100 car traveling at a speed of 23 skids to a halt on wet concrete where = 0.40. How long are the skid marks
Then, a thin conducting wire connects the spheres, redistributing the charge on each sphere. When the wire is removed the spheres still repel but with a force of F2 = 0.100 N. Using this information, find the initial charge on each sphere, q1 and ..
A solid disk of mass m1 = 9.5 kg and radius R = 0.18 m is rotating with a constant angular velocity of ? = 38.0 rad/s. What average torque was exerted on the rod by the disk
a skier is pulled up a slope at a constant velocity by a tow bar. the slope is inclined at 23.0deg with respect to the
If you shake one end of a taut rope steadily five times each second, what would be the period of the sinusoidal wave set up in the rope
A car accelerates from rest to a speed of 19.0m/s in 6.00 seconds. If the car weighs 16000N, what average power must the motor produce to cause this acceleration
After getting a drink of water, a hamster jumps onto an exercise wheel for a run. Afew seconds later the hamster is running in place with a speed of 1.3m/s. Find the work done by the hamster to get the exercise wheel moving, assuming it is a hoop of..
NBA player Michael Jordan had one of the longest hang times in the league, about 0.92s. how high do they jump
Two objects have the same kinetic energy. One has a speed that is 1.7 times greater than the speed of the other. What is the ratio of their masses
a fire hose exerts a force on the person holding it. this is because the water accelerates as it goes from the hose
Determine the temperature at which the resistance of atungstenwire will be three timesits value at 20°C. Assume its coefficient of resistivity remains constant.
An eagle is flying horizontally at 6.7 m/s with a fish in its claws. It accidentally drops the fish. How much time passes before the fish's speed doubles
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