A disk-shaped (radius = 0.20 m) is mounted on a frictionless, horizontal axis. A light cord...
A disk-shaped (radius = 0.20 m) is mounted on a frictionless, horizontal axis. A light cord wrapped around the wheel supports a 0.50-kg object. When released from rest the object falls with a downward acceleration of 5.0 m/s^2. What is the mass of the pulley?
Please show all the steps and diagram.
Homework Answers
Equations of motion of the mass gives:
Let T be the tension in the cord.
Now torque about the disk shaped pulley:
where 
is the angular
acceleration
Moment of inertia of disk = 
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A disk-shaped (radius = 0.20 m) is mounted on a frictionless,
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1. A pulley (radius = 0.20 m) is mounted on a frictionless, horizontal axis. A nearly massless string is wrapped around the pulley and supports a hanging mass of 0.55kg. When released from rest the mass falls with a downward acceleration of 5.1 m/s. What is the moment of inertia of the pulley? (8pts) el (@9
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In
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A uniform disc with mass M and radius R = 0.10 m is mounted on a frictionless, horizontal axle, as shown in the figure. The light cord wrapped around the disk is pulled so that it has a constant tension of T = 20.0 N. Starting from the rest, the disk performs a rotational motion with a constant angular acceleration a = 2 rad/s2 Find mass M of the disk. (Note that the moment of inertia of the disk is...
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A 12.0 kg object is attached to a cord that is wrapped around a
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The adjacent figure shows a uniform disk, with mass M-2.5kg and radius R-20cm., mounted on a...
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A wheel (radius = 0.30 m) is mounted on a frictionless, horizontal axis. A light cord wrapped around the wheel supports a 0.50-kg object. When released from rest the object falls with a downward acceleration of 5.0 m/sec. 111 TL LLLL 17. Find the tension on the cord. 18. Find the angular acceleration of the wheel. 19. Find the moment of inertia of the wheel. mg
011 10.0 points A uniform disk of radius 0.31 m is mounted on a frictionless, horizontal axis. A light cord wrapped around the disk supports a 1.5 kg object, as shown. When released from rest the object falls with a downward acceleration of 4.6 m/s?. MacBook Air r
1. A pulley (radius = 0.20 m) is mounted on a frictionless, horizontal axis. A nearly massless string is wrapped around the pulley and supports a hanging mass of 0.55kg. When released from rest the mass falls with a downward acceleration of 5.1 m/s. What is the moment of inertia of the pulley? (8pts) el (@9
In
the figure below, a wheel of radius 0.15 m is mounted on a
frictionless horizontal axle. A massless cord is wrapped around the
wheel and attached to a 2.0 kg box that slides on a frictionless
surface inclined at angle θ = 25° with the horizontal. The
box accelerates down the surface at 2.1 m/s2. What is
the rotational inertia of the wheel about the axle?
______ kg · m2
In the figure below, a wheel of radius 0.15...
Your answer is partially correct. A wheel of radius 0.486 m is mounted on a frictionless horizontal axis. The rotational inertia of the wheel about the axis is 0.0240 kg-m. A massless cord wrapped around the wheel is attached to a 2.91 kg block that slides on a horizontal frictionless surface. If a horizontal force of magnitude - 3.52 N is applied to the block as shown in the figure, what is the angular acceleration of the wheel? Take the...
Question 1 A yo-yo-shaped device mounted on a horizontal frictionless axis is used to lift a 28 kg box as shown in the figure. The outer radius R of the device is 1.1 m, and the radius r of the hub is 0.49 m When a constant horizontal force Fapp of magnitude 190 N is applied to a rope wrapped around the outside of the device, the box, which is suspended from a rope wrapped around the hub, has an...
A uniform disc with mass M and radius R = 0.10 m is mounted on a frictionless, horizontal axle, as shown in the figure. The light cord wrapped around the disk is pulled so that it has a constant tension of T = 20.0 N. Starting from the rest, the disk performs a rotational motion with a constant angular acceleration a = 2 rad/s2 Find mass M of the disk. (Note that the moment of inertia of the disk is...
A 12.0 kg object is attached to a cord that is wrapped around a
wheel of radius 10.0 cm. The acceleration of the object down the
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A 12.0 kg object is...
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The adjacent figure shows a uniform disk, with mass M-2.5kg and radius R-20cm., mounted on a fixed horizontal axel. A block with mass m-1.2kg hangs from a massless cord that is wrapped around the rim of the disk. Find the acceleration of the falling disk. (4.8m/s2)
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