Answer :
Final answer:
The angular acceleration of Amy's tetherball is calculated using the formula α = τ/I. With the given torque of 196 Nm and a moment of inertia of 1.63 kg m², the angular acceleration is 120.24 rad/s².
Explanation:
To calculate the angular acceleration of Amy's tetherball, we need to apply the formula α = τ/I, where α is the angular acceleration, τ is the torque, and I is the moment of inertia. Given that the torque (τ) is 196 Nm and the moment of inertia (I) is 1.63 kg m², we can substitute these values into the formula to find out the angular acceleration.
Using the formula, we get: α = τ/I = 196 Nm / 1.63 kg m², which equals 120.24 rad/s².
Therefore, the correct answer would be:
A) 120.24 rad/s²
