Question

In: Physics

A top-loading washing machine has a cylindrical tub that rotates about a vertical axis. The tub...

A top-loading washing machine has a cylindrical tub that rotates about a vertical axis. The tub of one such machine starts from rest and reaches an angular speed of 2.0 rev/s in 7.0 s. The lid of the machine is then opened, which turns off the machine, and the tub slows to rest in 11.0 s. Through how many revolutions does the tub turn during this 18 s interval? Assume constant angular acceleration while it is starting and stopping.

Solutions

Expert Solution

Consider the starting phase

Final angular speed,

Use formula

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Use formula

==================

Consider the stopping phase

Initial angular speed,

Final angular speed,

Use formula

---------

Use formula

========

Total rotation,

Convert radians to revolutions. Divide by

ANSWER :

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genius_generous answered 8 months ago
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