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A cylinder is rotating about an axis that passes through the center of each circular end piece. The cylinder has a radius of 0.0940 meter, an angular speed of 85.0 rad/s, and a moment of inertia of 1.39 kg•m2. A brake shoe presses against the surface of the cylinder and applies a tangential frictional force to it. The frictional force reduces the angular speed of the cylinder by a factor of 7 during a time of 6.00 second.
(a) Obtain the magnitude of the angular deceleration of the cylinder.
(b) Obtain the magnitude of the force of friction applied by the brake shoe.
A 3.0 kg particle withvelocity v =(5.0 m/s) ihat -(6.0 m/s) jhat isat x = 3.0 m, y = 8.0 m. It is pulled by a 7.0 N force in thenegative x direction. What is the angular momentum of the particle about the origin? What torque about the origin acts o..
The coldest and hottest temperatures ever recorded in Switzerland are -43.2 F (231 K) and 106.7 F(315K) respectively. What is the speed of sound in air at each temperature
A 72.0-kg bungee jumper is standing on a tall platform (h0 = 42.2 m). The bungee cord has an unstrained length of L0 = 9.54 m, Determine how far the bungee jumper is from the water when he reaches the lowest point in his fall
An automobile engine slows down from 3000 rpm to 900 rpm in 4.5 s. find the total number of revolutions the engine makes in this time
Andrew jumped on a rocket, sending it straight up, and timing its motion. He sees that the rocket goes by the top of the library after .40 seconds, How fast was the rocket going at lauch
a hotel elevator ascends 200 meters with maximum speed of 5 ms. its acceleration and deceleration both have a magnitude
Three forces acting on an object are given by f1 = (?2.05i + 6.30j) N, f2 = (4.70i ? 1.95j) N, and f3 = (?42.5) N. What is the direction of the acceleration
The tires of a car make 75revolutions as the car reduces its speed uniformly from 110 km/h to40 km/h. The tires have a diameter of 0.80 m. What was the angular acceleration of the tires
A 0.350 kilogram particle slides around a horizontal track. The track has a smooth vertical outer wall forming a circle with a radius of 1.50 meter. Find the total number of revolutions the particle makes
An anchor shoots an arrow with a velocity of 45 m/s at the angle of 50 degrees with the horizontal.An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up into the air at th right time and speed ..
You are driving home from school steadily at 94 for 120. It after that begins to rain and you slow to 60. You arrive home after driving two hours and 20 minutes. How far is your hometown from school.
An unstable particle with a mass equal to 3.34 10-27 kg is initially at rest. Find the masses of the fragments
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