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A rope is wound around a hollow cylinder of mass 3 kg and radius 40 cm. If the rope is pulled with a force of:

A. 10 N
B. 20 N
C. 30 N
D. 40 N

1 Answer

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Final answer:

The problem involves a hollow cylinder being wound by a rope and pulled with a force. To calculate the angular velocity of the cylinder after a certain distance of cord has been removed, we can use the work-energy theorem.

Step-by-step explanation:

When a rope is wound around a hollow cylinder and pulled with a force, the cylinder experiences a torque which causes it to rotate. This is an example of a rotational motion problem in physics.

In this case, the force applied to the rope is 40 N. To calculate the angular velocity of the cylinder, we can use the work-energy theorem. The work done by the force is equal to the change in rotational kinetic energy of the cylinder.

The work done is given by the equation:

Work = Torque * Angle

where Torque = Force * Radius of the cylinder and Angle = Distance of the cord removed / Radius of the cylinder.

Using the given radius and force, we can calculate the torque. Then, using the work-energy theorem, we can calculate the change in rotational kinetic energy and find the angular velocity of the cylinder after 5.0 m of cord have been removed.

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