Questions
A car is moving along a circular arc at a speed of 20 ms-1 . The radius of the arc is 10 m. If the speed is increased at the rate of 30 ms-2, what is the resultant acceleration ?
detailed solution
Correct option is B
Here, ar=v2r=20×2010=40ms−2ar=30ms−2a=ar2+at2=302+402=50ms−2Hence (2) is the choiceTalk to our academic expert!
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A motor car is travelling at 60 m/s on a circular road of radius 1200 m. It is increasing its speed at the rate of 4 . The acceleration of the car is:
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