Category Archives:
Essay Writing Help

Suppose you set your textbook sliding across a gymnasium floor with a certain initial speed. Suppose you set your textbook sliding across a gymnasium floor with a certain initial speed. It quickly stops moving because of a friction force exerted on it by the floor. Next, you start a basketball rolling with the same initial […]

A wheel of mass M has radius R . It is standing vertically on the floor, and we want to exert A wheel of mass M has radius R. It is standing vertically on the floor, and we want to exert a horizontal force F at its axle so that it will climb a step […]

The combination of an applied force and a friction force produces The combination of an applied force and a friction force produces a constant total torque of 36.0 N路m on a wheel rotating about a fixed axis. The applied force acts for 6.00 s. During this time the angular speed of the wheel increases from […]

The cylinder in Figure is held by a hand that The cylinder in Figure is held by a hand that is accelerated upward so that the center of mass of the cylinder does not move. Find (a) The tension in the string, (b) The angular acceleration of the cylinder, and (c) The acceleration of thehand. […]

Suppose the car in Problem 32 has a disk brake system. Suppose the car in Problem 32 has a disk brake system. Each wheel is slowed by the friction force between a single brake pad and the disk-shaped rotor. On this particular car, the brake pad contacts the rotor at an average distance of 22.0 […]

A vinyl record is played by rotating the record so that an approximately circular groove in the… A vinyl record is played by rotating the record so that an approximately circular groove in the vinyl slides under a stylus. Bumps in the groove run into the stylus, causing it to oscillate. The equipment converts those […]

A wheel has a constant angular acceleration of 3.0 rad/s2. A wheel has a constant angular acceleration of 3.0 rad/s2. During a certain 4.0 s interval, it turns through an angle of 120 rad, assuming that the wheel started from rest, how long has it been in motion at the start of this 4.0 s […]

The angular velocity of a wheel rotating on a horizontal The angular velocity of a wheel rotating on a horizontal axle points west. In what direction is the linear velocity of a point on the top of the wheel? If the angular acceleration points east, describe the tangential linear acceleration of this point at the […]

The system in Figure is released from rest. The 30-kg The system in Figure is released from rest. The 30-kg block is 2 m above the ledge. The pulley is a uniform disk with a radius of 10 cm and mass of 5 kg. Find (a) The speed of the 30-kg block just before it […]

Two points are on a disk turning at constant angular Two points are on a disk turning at constant angular velocity, one point on the rim and the other halfway between the rim and the axis. Which point moves the greater distance in a given time? Which turns through the greater angle? Which has the […]