A Gyroscope Has a Moment of Inertia of 0

question 17

Multiple Choice

A gyroscope has a moment of inertia of 0.140 kg m² and has an initial angular speed of 12.0 rad/s. If a lubricant is applied to the bearings of the gyroscope so that frictional torque is reduced to 2.00 *10^-2 N
M, then in what time interval will the gyroscope coast from 12.0 rad/s to zero?

• A) 150 s
• B) 105 s
• C) 90.0 s
• D) 84.0 s

---

Definitions:

Cash Inflows

Money or other forms of capital coming into a business, often from sales, investments, or financing activities.

Required Rate

The minimum annual percentage return on investment demanded by investors or lenders.

Payback Period

The duration required for an investment to produce income or cash flows equal to the investment's initial cost.

After-tax Cash Flows

The net cash that remains after all tax-related expenses are deducted, often considered in investment analysis to gauge true profitability.