Two wheels have the same mass and radius of 4.9 kg and 0.41 m, respectively. One...

Two wheels have the same mass and radius of 4.9 kg and 0.41 m, respectively. One has (a) the shape of a hoop and the other (b) the shape of a solid disk. The wheels start from rest and have a constant angular acceleration with respect to a rotational axis that is perpendicular to the plane of the wheel at its center. Each turns through an angle of 13 rad in 9.5 s. Find the net external torque that acts on each wheel.

Solutions

Expert Solution

genius_generous answered 1 month ago

Next > < Previous

Related Solutions

A truck with a total mass of 1.72 * 10^3 kg has wheels of radius 33.0...

A truck with a total mass of 1.72 * 10^3 kg has wheels of radius 33.0 cm and moment inertia of 0.800kg-m^2. Find the trucks (a) translational energy and (b) rotational energy when the truck is moving at a speed of 25.0 m/s Show All Your Work

A rod of mass 0.72 kg and radius 0.06 m rests on two parallel rails that...

A rod of mass 0.72 kg and radius 0.06 m rests on two parallel rails that are d = 0.12 m apart and L = 0.45 m long. The rod carries a current of I = 48 A. If it starts from rest, what is the speed of the rod as it leaves the rails if there is a uniform magnetic field of magnitude 0.24 T directed perpendicular to the rod and rails? Answer in units of m/s. ...

Two satellites, A and B, both of mass m = 115 kg, move in the same...

Two satellites, A and B, both of mass m = 115 kg, move in the same circular orbit of radius r = 7.57 106 m around Earth but in opposite senses of rotation and therefore on a collision course. a) What is the total mechanical energy EA + EB of the two satellites + Earth system before the collision? b)If the collision is completely inelastic so that the wreckage remains as one piece of tangled material (mass = 2m), what...

If a disk and a ring both have the same mass and radius, which one has...

If a disk and a ring both have the same mass and radius, which one has the greater moment of inertia? Why is this so? A figure skater doing pirouettes spins faster when she tucks her arms close to her chest and spins slower when she spreads out her arms. Explain this in terms of moment of inertia and Newton’s Second Law for rotational motion.

A disk with mass m = 11.8 kg and radius R = 0.31 m begins at...

A disk with mass m = 11.8 kg and radius R = 0.31 m begins at rest and accelerates uniformly for t = 17.2 s, to a final angular speed of ω = 31 rad/s. 1.What is the angular acceleration of the disk? 2. What is the angular displacement over the 17.2 s? 3. What is the moment of inertia of the disk? 4. What is the change in rotational energy of the disk?

Two children of the same mass m = 22:4 kg are playing on the rotating carousel...

Two children of the same mass m = 22:4 kg are playing on the rotating carousel below. The oor of the carousel has mass M = 35:0 kg and radius R = 1:75 m. The centre of mass of each child is at a distance of r = 30:5 cm from the centre of the carousel. The carousel is rotating at an angular velocity of ! = 1:05 rad/s. (a) (1 point) What is the tangential speed of the children?...

a 4.00 kg mass is moving in a circular path of radius 3.20 m with a...

a 4.00 kg mass is moving in a circular path of radius 3.20 m with a constant linear speed of 6.29 m/s. The radial force on the mass is

A wheel has a mass of 0.5 kg and a radius of 0.25 m. It rolls...

A wheel has a mass of 0.5 kg and a radius of 0.25 m. It rolls such that the center of mass of the wheel has a velocity of 10 m/s. a) Calculate the angular velocity of the wheel. b) Calculate the translational kinetic energy of the wheel. c) Calculate the rotational kinetic energy of the wheel. d) Calculate the total kinetic energy of the wheel by summing the two kinetic energies

A solid cylinder has a mass of 2.50 kg and a radius of 0.100 m. It...

A solid cylinder has a mass of 2.50 kg and a radius of 0.100 m. It is released from rest on a ramp tilted at 8.00° from horizontal, and it rolls without slipping down the ramp until it has moved a vertical distance of 0.350 m. What is the angular speed of the cylinder when it reaches the bottom? What is the magnitude of the angular momentum of the cylinder when it reaches the bottom?

A uniform disk with mass m = 9.07 kg and radius R = 1.36 m lies...

A uniform disk with mass m = 9.07 kg and radius R = 1.36 m lies in the x-y plane and centered at the origin. Three forces act in the +y-direction on the disk: 1) a force 313 N at the edge of the disk on the +x-axis, 2) a force 313 N at the edge of the disk on the –y-axis, and 3) a force 313 N acts at the edge of the disk at an angle θ =...

Subjects