Question:
The angular speed of truck wheel is increased from 900 rpm to 2460 rpm in 26 seconds. The number of revolutions by the truck engine during this time is _____________. (Assuming the acceleration to be uniform).
The angular speed of truck wheel is increased from 900 rpm to 2460 rpm in 26 seconds. The number of revolutions by the truck engine during this time is _____________. (Assuming the acceleration to be uniform).
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Convert rpm to rev/s and use average angular speed times time for uniform acceleration.
Updated On: Nov 4, 2026
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Correct Answer: 728
Solution and Explanation
\(\omega_0=900\) rpm \(=15\) rev/s and \(\omega=2460\) rpm \(=41\) rev/s.
With uniform acceleration, the average speed is \(\frac{15+41}{2}=28\) rev/s.
Number of revolutions \(=28\times26=728\).
Answer: 728
With uniform acceleration, the average speed is \(\frac{15+41}{2}=28\) rev/s.
Number of revolutions \(=28\times26=728\).
Answer: 728
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