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Question 2 (8 marks) Applied force A vertical pulley, of radius 0.4 meter, can rotate about...
A pulley, with a rotational inertia of 7.6 × 10-3 kg·m2 about its axle and a...
A pulley, with a rotational inertia of 7.6 × 10-3
kg·m2 about its axle and a radius of 9.3 cm, is acted on
by a force applied tangentially at its rim. The force magnitude
varies in time as F= 0.60t +
0.30t2, with F in newtons and
t in seconds. The pulley is initially at rest. At
t = 1.0 s what are (a) its angular
acceleration and (b) its angular speed?
Question 3 A pulley, with a rotational inertia...
A pulley, with a rotational inertia of 9.4 × 10-3 kg·m2 about its axle and a...
A pulley, with a rotational inertia of 9.4 × 10-3 kg·m2 about its axle and a radius of 6.0 cm, is acted on by a force applied tangentially at its rim. The force magnitude varies in time as F = 0.70t + 0.30t2, with F in newtons and t in seconds. The pulley is initially at rest. At t = 3.3 s what are (a) its angular acceleration and (b) its angular speed?
A pulley having a rotational inertia of 1.2 ✕ 10-3 kg·m^2 about its axle and a...
A pulley having a rotational inertia of 1.2 ✕ 10-3 kg·m^2 about its axle and a radius of 25 cm is acted on by a force, applied tangentially at its rim, that varies in time as F = 0.50t + 0.30t^2, where F is in newtons and t in seconds. If the pulley was initially at rest, find its angular speed after 10.0 s. ANSWER in rad/s^2
A sphere of radius R can rotate about a vertical axis on frictionless bearings (see figure...
A sphere of radius R can rotate about a vertical axis on frictionless bearings (see figure below). Let the rotational inertia of the sphere behe.A massless cord passes around the equator of the sphere, overs pulley with rotational inertial and radius r, and is attached to a small object of mass m. There is no friction on the pulley's axle and the cord does not slip on the pulley. Att 0, the mass m has speed Vo The system is...
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 sphere of radius R can rotate about a vertical axis on frictionless bearings (see figure...
A sphere of radius R can rotate about a vertical axis on frictionless bearings (see figure below). Let the rotational inertia of the sphere be A massless cord passes around the equator of the sphere, over a pulley with rotational inertial and radius r, and is attached to a small object of mass m. There is no friction on the pulley's axle and the cord does not slip on the pulley. At 1 = 0, the mass m has speed...
An old grindstone, used for sharpening tools, is a solid cylindrical wheel that can rotate about...
An old grindstone, used for sharpening tools, is a solid cylindrical wheel that can rotate about its central axle with negligible friction. The radius of the wheel is 0.330 m. A constant tangential force of 300 N applied to its edge causes the wheel to have an angular acceleration of 0.908 rad/s2. a) What is the moment of inertia of the wheel (in kg, m2)? b) What is the mass (in kg) of the wheel? c) The wheel starts from...
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 sphere of radius R can rotate about a vertical axis on frictionless bearings (see figure...
A sphere of radius R can rotate about a vertical axis on frictionless bearings (see figure below). Let the rotational inertia of the sphere be Isphere. A massless cord passes around the equator of the sphere, over a pulley with rotational inertia I pulley and radius r, and is attached to a small object of mass m. There is no friction on the pulley's axle and the cord does not slip on the pulley. At t = 0, the mass...
An old grindstone, used for sharpening tools, is a solid cylindrical wheel that can rotate about...
An old grindstone, used for sharpening tools, is a solid cylindrical wheel that can rotate about its central axle with negligible friction. The radius of the wheel is 0.330 m. A constant tangential force of 300 N applied to its edge causes the wheel to have an angular acceleration of 0.968 rad/s2. (a) What is the moment of inertia of the wheel (in kg · m2)? ______kg · m2 (b) What is the mass (in kg) of the wheel? ________kg...
A pulley, with a rotational inertia of 7.6 × 10-3
kg·m2 about its axle and a radius of 9.3 cm, is acted on
by a force applied tangentially at its rim. The force magnitude
varies in time as F= 0.60t +
0.30t2, with F in newtons and
t in seconds. The pulley is initially at rest. At
t = 1.0 s what are (a) its angular
acceleration and (b) its angular speed?
Question 3 A pulley, with a rotational inertia...
A sphere of radius R can rotate about a vertical axis on frictionless bearings (see figure below). Let the rotational inertia of the sphere behe.A massless cord passes around the equator of the sphere, overs pulley with rotational inertial and radius r, and is attached to a small object of mass m. There is no friction on the pulley's axle and the cord does not slip on the pulley. Att 0, the mass m has speed Vo The system is...
A sphere of radius R can rotate about a vertical axis on frictionless bearings (see figure below). Let the rotational inertia of the sphere be A massless cord passes around the equator of the sphere, over a pulley with rotational inertial and radius r, and is attached to a small object of mass m. There is no friction on the pulley's axle and the cord does not slip on the pulley. At 1 = 0, the mass m has speed...
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 sphere of radius R can rotate about a vertical axis on frictionless bearings (see figure below). Let the rotational inertia of the sphere be Isphere. A massless cord passes around the equator of the sphere, over a pulley with rotational inertia I pulley and radius r, and is attached to a small object of mass m. There is no friction on the pulley's axle and the cord does not slip on the pulley. At t = 0, the mass...
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