A 20.0 N force is applied to a cord wrapped around a pulley of mass 1.00 kg and radius 33.0 cm. The pulley is observed to accelerate uniformly from rest to reach an angular speed of 30.0/radians/s in 3.00s. If there is a frictional torque at the axel, of 1.10 mN, determine the moment of inertia of the pulley. I need help understanding this kind of stuff, since my physics teacher does bare minimal effort in teaching

A mass m1 (3.0 kg) is connected by a light string that passes over a pulley of mass M ( 4.0 kg) to a mass m2 (2.0 kg) sliding on a frictionless incline as shown in the figure. There is no slippage between the string and the pulley. The pulley has a radius of 25 cm and a moment of inertia of 2 MR2. The angle is 60 degrees, then what is the Ma Scceleration of m1? m1

A 1.0-kg mass hangs on a rope wrapped around a frictionless disk pulley of mass 5 kg and radius 0.5 m. What is the acceleration of the mass? (The moment of inertia of the pulley is 1/2MR2.)

A rope of negligible mass is wound around a hollow cylinder of mass 3 kg and radius 40 cm. What is the angular acceleration of the cylinder if the rope is pulled with a  force of 30 N? What is the linear acceleration of the rope? Assume that there is no slipping.

In the figure, two 9.50 kg blocks are connected by a massless string over a pulley of radius 2.40 cm and rotational inertia 7.40 x 10-4 kg-m2. The string does not slip on the pulley; it is not known whether there is friction between the table and the sliding block; the pulley's axis is frictionless. When this system is released from rest, the pulley turns through 1.20 rad in 152 ms and the acceleration of the blocks is constant. What are (a) the magnitude of the pulley's angular acceleration, (b) the magnitude of either block's acceleration, (c) string tension T1, and (d) string tension T2? Assume free-fall acceleration to be equal to 9.81 m/s?. (a) Number i Units (b) Number i Units (c) Number i Units (d) Number i Units

The flywheel of an engine has a moment of inertia of 5 kg.m2 about its axis of rotation. What constant torque is required to bring it up to an angular speed of 650 revs/min in 15 seconds, starting from rest?

A bicycle wheel, of radius 0.300 m and mass 1.59 kg (concentrated on the rim), is rotating at 4.00 rev/s. After 52.8 s the wheel comes to a stop because of friction. What is the magnitude of the average torque due to frictional forces?

A rolling wheel of diameter of 68 cm slows down uniformly from 8.4 m/s to rest over a distance of 115 m. What is the magnitude of its angular acceleration if there was no slipping?

You have a grindstone (a disk) that is 101.903 kg, has a 0.573-m radius, and is turning at 72.840 rpm, and you press a steel axe against it with a radial force. Assuming the stone makes 8.395 turns before coming to rest. What is the value of that radial force (unit N) if the kinetic coefficient of friction between steel and stone is 0.209? The moment of inertia of the grand stone is 1/2 mass (radius)?

A gymnast on a high bar swings in a clockwise direction through 4 revolutions in a time of 4.80 s. Find the average angular velocity (in rad/s) of the gymnast.