A Fan Blade,initially at Rest,rotates with a Constant Acceleration of 0.025

question 19

Multiple Choice

A fan blade,initially at rest,rotates with a constant acceleration of 0.025 rad/s².What is the time interval required for it to reach a 4.2-rad displacement after starting from rest?

• A) 1.8 s
• B) 2.0 s
• C) 16 s
• D) 18 s

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