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A large solid disk of radius 0.56 m freely rotates about a vertical frictionless axis at...
A large solid disk of radius 0.51m freely rotates about a vertical frictionless axis at an...
A large solid disk of radius 0.51m freely rotates about a vertical frictionless axis at an initial angular speed of 9 rad's. A small friction brake is used to bring the disk to rest in a time of 4.4 s by pressing the brake radially inward against the rim of the disk with a constant force of 36 N as shown in the figure below The coefficient of friction between the brake and the disk is 0.37 Side View Top...
A potter's wheel having a radius of 0.500 m and mass 45.0 kg is rotating freely...
A potter's wheel having a radius of 0.500 m and mass 45.0 kg is rotating freely at 50.0 rev/min in a clockwise direction. The potter can stop the wheel by pressing a wet rag against the outside rim of the wheel and exerting a radially inward force of 70.0 N. Since this force is in the radial direction, it alone cannot cause the wheel to slow its spinning. What can happen, however, is that a normal force can result from...
please help A uniform disk of radius 0.65 m rotates clockwise about its central axis and...
please help
A uniform disk of radius 0.65 m rotates clockwise about its central axis and accelerates with constant angular acceleration. At time 1-0 it is rotating at 34 rad/s, at timeに15 s later, its angular speed is 13 rad/s. (Recall 2π rad-1 rev). a. What is the direction of the angular velocity? b. What is the direction of the angular acceleration? c. Calculate the magnitude of the angular acceleration d. Through how many radians has the disk turned in...
A potter's wheel having a radius of 0.561 m and a moment of inertia of 12.5...
A potter's wheel having a radius of 0.561 m and a moment of inertia of 12.5 kg⋅⋅m22 is rotating freely at 53.7 rev/min. The potter can stop the wheel in5.22 s by pressing a wet rag against the rim and exerting a radially inward force of 68.2 N. Find the effective coefficient of kinetic friction between the wheel and the wet rag.
A potter's wheel having a radius 0.49 m and a moment of inertia of 12.4 kg...
A potter's wheel having a radius 0.49 m and a moment of inertia of 12.4 kg · m2 is rotating freely at 46 rev/min. The potter can stop the wheel in 5.5 s by pressing a wet rag against the rim and exerting a radially inward force of 71 N. Find the effective coefficient of kinetic friction between the wheel and the wet rag.
A potter's wheel having a radius 0.45 m and a moment of inertia of 10.3 kg...
A potter's wheel having a radius 0.45 m and a moment of inertia of 10.3 kg · m2 is rotating freely at 46 rev/min. The potter can stop the wheel in 6.5 s by pressing a wet rag against the rim and exerting a radially inward force of 73 N. Find the effective coefficient of kinetic friction between the wheel and the wet rag.
A uniform circular disk (merry-go-round) of radius R=2.19 m and mass M=21.9 kg freely rotates about...
A uniform circular disk (merry-go-round) of radius R=2.19 m and mass M=21.9 kg freely rotates about a vertical axis, which is perpendicular to the ground, with initial angular velocity omegai=3.05 rad/s. A cat of mass m=8.70 kg, climbing in a tree, which hangs over the disk, falls straight down onto the edge of the disk and rides on it. The cat decides to walk inward and sits down R/2 m from the center. What is now the magnitude of the...
(a) What is the magnitude of the torque on the disk (about the z axis)...
(a) What is the magnitude of the torque on the disk (about the z
axis) due to F1? (1pt)
(b) What is the magnitude of the torque on the disk due to F2?
(1pt)
(c) What is the magnitude of the torque on the disk due to F3?
(1pt)
(d) What is the magnitude and direction (clockwise or
counterclockwise) of the angular ac- celeration about the z-axis of
the disk? (2pt)
(e) If the disk starts from rest, what...
A 120-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m...
A 120-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope. What constant force would have to be exerted on the rope to bring the merry-go-round from rest to an angular speed of 0.700 rev/s in 2.00 s? (State the magnitude of the force.) N
A uniform disk with mass m = 8.55 kg and radius R = 1.35 m lies...
A uniform disk with mass m = 8.55 kg and radius R = 1.35 m lies in the xy plane and centered at the origin. Three forces act on the disk in the +y-direction (see figure below): (1) a force F1 = 335 N at the edge of the disk on the +x-axis, (2) a force F2 = 335 N at the edge of the disk on the ?y-axis, and (3) a force F3 = 335 N at the edge...
A large solid disk of radius 0.51m freely rotates about a vertical frictionless axis at an initial angular speed of 9 rad's. A small friction brake is used to bring the disk to rest in a time of 4.4 s by pressing the brake radially inward against the rim of the disk with a constant force of 36 N as shown in the figure below The coefficient of friction between the brake and the disk is 0.37 Side View Top...
A potter's wheel having a radius of 0.500 m and mass 45.0 kg is rotating freely at 50.0 rev/min in a clockwise direction. The potter can stop the wheel by pressing a wet rag against the outside rim of the wheel and exerting a radially inward force of 70.0 N. Since this force is in the radial direction, it alone cannot cause the wheel to slow its spinning. What can happen, however, is that a normal force can result from...
please help
A uniform disk of radius 0.65 m rotates clockwise about its central axis and accelerates with constant angular acceleration. At time 1-0 it is rotating at 34 rad/s, at timeに15 s later, its angular speed is 13 rad/s. (Recall 2π rad-1 rev). a. What is the direction of the angular velocity? b. What is the direction of the angular acceleration? c. Calculate the magnitude of the angular acceleration d. Through how many radians has the disk turned in...
(a) What is the magnitude of the torque on the disk (about the z
axis) due to F1? (1pt)
(b) What is the magnitude of the torque on the disk due to F2?
(1pt)
(c) What is the magnitude of the torque on the disk due to F3?
(1pt)
(d) What is the magnitude and direction (clockwise or
counterclockwise) of the angular ac- celeration about the z-axis of
the disk? (2pt)
(e) If the disk starts from rest, what...
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