A Machinist Turns on the Power on to a Grinding $58 \mathrm { rad } / \mathrm { s }$

question 35

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 $58 \mathrm { rad } / \mathrm { s }$ The wheel is run at that angular velocity for 30 s,and then power is shut off.The wheel slows down uniformly at $1.4 \mathrm { rad } / \mathrm { s } ^ { 2 }$ until the wheel stops.What is the total number of revolutions made by the wheel in this situation?

• A)510
• B)280
• C)320
• D)470
• E)750

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Definitions:

Empathy

The ability to understand and share the feelings of another, fostering a sense of connection and understanding.

Powerful Position

A status or role that confers authority and influence over others, often accompanied by the ability to make important decisions.

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Shared expectations and rules that guide behavior of people within social groups.

Morality Stage

A concept from developmental psychology indicating the progression of moral reasoning and ethical behavior in individuals.