A Machinist Turns on the Power on to a Grinding $96 \mathrm { rad } / \mathrm { s }$

question 46

Multiple Choice

A machinist turns on the power on to a grinding wheel at time t = 0 s. The wheel accelerates uniformly from rest for 10 s and reaches the operating angular speed of $96 \mathrm { rad } / \mathrm { s }$ The wheel is run at that angular velocity for 40 s and then power is shut off. The wheel slows down uniformly at $1.5 \mathrm { rad } / \mathrm { s } ^ { 2 }$ until the wheel stops. For how long a time after the power is shut off does it take the wheel to stop?

• A)64 s
• B)62 s
• C)66 s
• D)68 s
• E)70 s

---

Definitions:

Total Asset Turnover

A financial ratio that measures a company's ability to generate sales from its assets by comparing net sales with average total assets.

Inventory Turnover

A measure showing the frequency at which a company's stock is sold and replenished within a given timeframe.

Dividend Yield

A ratio indicating the annual dividends a company distributes in relation to its share price.

Gross Margin Ratio

A financial metric that measures the percentage of sales revenue that exceeds the cost of goods sold, indicating the efficiency of sales and production.