Question

Identify the spool and light cord as a system. which analysis model below correctly describes the system as the cord is pulled and will be most useful for solving part (a) of this problem?

O rigid object under constant angular acceleration
O isolated system (energy)
O nonisolated system (energy)
O rigid object under a net torque
O none of the above

Answer 1

The spool and light cord can be considered as a rigid object under constant angular acceleration. Applying the work-energy theorem, we can calculate the angular velocity of the cylinder after 5.0 m of cord have been removed. Therefore, the correct analysis model for solving part (a) of this problem is O rigid object under constant angular acceleration.

Step-by-step explanation:

The system consisting of the spool and light cord can be considered as a rigid object under constant angular acceleration. This analysis model is most useful for solving part (a) of the problem. When the cord is pulled, the spool will experience a net torque which will cause it to rotate and increase its angular velocity.

Applying the work-energy theorem, we can calculate the angular velocity of the cylinder after 5.0 m of cord have been removed. The formula for the work done on the spool is given by:

= Δ(1/2^2)

Where is the work done on the spool, is the moment of inertia of the spool, and is the change in angular velocity. By substituting the given values, we can calculate the angular velocity of the cylinder.

Therefore, the correct analysis model for solving part (a) of this problem is O rigid object under constant angular acceleration.