Equations of Rotational Motion Video Lessons

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# Problem: Dario, a prep cook at an Italian restaurant, spins a salad spinner 20.0 times in 5.00 seconds and then stops spinning it. The salad spinner rotates 6.00 more times before it comes to rest. Assume that the spinner slows down with constant angular acceleration.What is the angular acceleration of the salad spinner as it slows down? Answer should be rad/s2.

###### FREE Expert Solution

Rotational kinematic equations:

Angular speed:

$\overline{){\mathbf{\omega }}{\mathbf{=}}\frac{\mathbf{∆}\mathbf{\theta }}{\mathbf{t}}}$

Δθ = n(2π) = (20)(2π) = 40π radians

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###### Problem Details

Dario, a prep cook at an Italian restaurant, spins a salad spinner 20.0 times in 5.00 seconds and then stops spinning it. The salad spinner rotates 6.00 more times before it comes to rest. Assume that the spinner slows down with constant angular acceleration.

What is the angular acceleration of the salad spinner as it slows down? Answer should be rad/s2.