Exam (153).pdf - Question(II A wheel 31 cm in diameter accelerates uniformly from 240 rpm to 360 rpm in 6.8 s How far will a point on the edge of the

# Exam (153).pdf - Question(II A wheel 31 cm in diameter...

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Question: (II) A wheel 31 cm in diameter accelerates uniformly from 240 rpm to 360 rpm in 6.8 s. How far will a point on the edge of the wheel have traveled in this time? Answer : First of all, express the initial and final angular speeds in unit of rad/s. Use and . Determine initial angular speed of the wheel. Similarly, find the final angular speed of the wheel. Angular acceleration is defined as rate of change of angular velocity. Here, is angular acceleration and is the time in which angular speed changes from .
Calculate angular acceleration of the wheel by substituting , and in the equation .

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• Summer '16
• boer
• Probability, Velocity, Physical quantities, Radian, final angular speeds