A 1.3 kg grindstone in the shape of a uniform cylinder of radius 0.20 m acquires...
A 1.3 kg grindstone in the shape of a uniform cylinder of radius 0.20 m acquires a rotational rate of 1700 rev/min from rest over a 5.4 s interval at constant angular acceleration. Calculate the torque delivered by the motor.
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A 1.3 kg grindstone in the shape of a uniform cylinder of radius
0.20 m acquires...
You have a grindstone (a disk) that is 88.0 kg, has a 0.490-m radius, and is...
You have a grindstone (a disk) that is 88.0 kg, has a 0.490-m radius, and is turning at 95.0 rpm, and you press a steel axe against it with a radial force of 21.0 N. (a)Assuming the kinetic coefficient of friction between steel and stone is 0.50, calculate the angular acceleration (in rad/s2) of the grindstone. (Indicate the direction with the sign of your answer.) ____________rad/s2 (b)How many turns (in rev) will the stone make before coming to rest? _____________...
Q.You have a grindstone (a disk) that is 91.0 kg, has a 0.280-m radius, and is...
Q.You have a grindstone (a disk) that is 91.0 kg, has a 0.280-m radius, and is turning at 65.0 rpm, and you press a steel axe against it with a radial force of 13.0 N. A. Assuming the kinetic coefficient of friction between steel and stone is 0.10, calculate the angular acceleration (in rad/s2) of the grindstone. (Indicate the direction with the sign of your answer.) B. How many turns (in rev) will the stone make before coming to rest?
A thin cord is wrapped around a grindstone of radius 0.30 m and mass 25 kg...
A thin cord is wrapped around a grindstone of radius 0.30 m and mass 25 kg supported by bearings that produce negligible friction torque. The cord exerts a steady 20-N tension force on the grindstone, causing it to accelerate from rest to 60 rad/s in 12 s. Determine the rotational inertia of the grindstone.
A grindstone of mass M = 30 kg and radius 0.5 m has a constant acceleration,...
A grindstone of mass M = 30 kg and radius 0.5 m has a constant acceleration, ", of 3.0 rad/s2. After 2 seconds.... A. Find the angular displacement B. Find the angular speed, T, after two seconds. C. Find the distance traveled in meters of a point on the rim of the grindstone after two seconds. D. Find the linear (or tangential) speed, v, of a point on the rim after two seconds. E. Find the tangential acceleration of a...
A certain pulley is a uniform disk of mass 2.7 kg and radius 0.25 m. A...
A certain pulley is a uniform disk of mass 2.7 kg and radius 0.25 m. A rope applies a constant torque to the pulley, which is free to rotate without friction, resulting in an angular acceleration of 0.12 rad/s2. The pulley starts at rest at time t = 0 s. What is its rotational kinetic energy at t = 2.2 s?
A uniform disk has a mass of 3.7 kg and a radius of 0.40 m. The...
A uniform disk has a mass of 3.7 kg and a radius of 0.40 m. The disk is mounted on frictionless bearings and is used as a turntable. The turntable is initially rotating at 30 rpm. A thin - walled hollow cylinder has the same mass and radius as the disk. It is released from rest, just above the turntable, and on the same vertical axis. The hollow cylinder slips on the turntable for 0.20 s until it acquires the...
You have a grindstone (a disk) that is 100 kg, has a 0.3 m radius, and...
You have a grindstone (a disk) that is 100 kg, has a 0.3 m radius, and is turning at 120 rpm, and you press a steel axe against it with a radial force of 15 N. (a) Assuming the kinetic coefficient of friction between steel and stone is 0.2, calculate the angular acceleration of the grindstone. (b) How many turns will the stone make before coming to rest?
A 2.1 kg solid cylinder (radius = 0.20 m , length = 0.60 m ) is...
A 2.1 kg solid cylinder (radius = 0.20 m , length = 0.60 m ) is released from rest at the top of a ramp and allowed to roll without slipping. The ramp is 0.85 m high and 5.0 m long. When the cylinder reaches the bottom of the ramp, what is its total kinetic energy? When the cylinder reaches the bottom of the ramp, what is its rotational kinetic energy?
A 100-kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m...
A 100-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 0.900 rev/s in 2.00 s? (State the magnitude of the force.)
Part A A uniform disk has a mass of 2.3 kg and a radius of 0.24...
Part A A uniform disk has a mass of 2.3 kg and a radius of 0.24 m. The disk is mounted on frictionless bearings and is used as a turntable. The turntable is initially rotating at 20 rpm. A thin-walled hollow cylinder has the same mass and radius as the disk. It is released from rest, just above the turntable, and on the same vertical axis. The hollow cylinder slips on the turntable for 0.20 s until it acquires the...
A thin cord is wrapped around a grindstone of radius 0.30 m and mass 25 kg supported by bearings that produce negligible friction torque. The cord exerts a steady 20-N tension force on the grindstone, causing it to accelerate from rest to 60 rad/s in 12 s. Determine the rotational inertia of the grindstone.
A 100-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 0.900 rev/s in 2.00 s? (State the magnitude of the force.)
Part A A uniform disk has a mass of 2.3 kg and a radius of 0.24 m. The disk is mounted on frictionless bearings and is used as a turntable. The turntable is initially rotating at 20 rpm. A thin-walled hollow cylinder has the same mass and radius as the disk. It is released from rest, just above the turntable, and on the same vertical axis. The hollow cylinder slips on the turntable for 0.20 s until it acquires the...
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