Question

when a car of mass 100kg is moving on a road of coefficient of friction = 0.5 . What should be the acceleration in order to gain a speed of 30m/s in 10 sec? ​

Answer 1

Explanation:

Given that, A car of mass 100kg moves on a circular track of radius 20m

Given that coefficient of friction=μ=0.64

To find the maximum velocity v with which the car can move is when the friction force will prove the necessary centripetal force 

⟹μmg=rmv2

⟹v=μrg

⟹v=0.64∗20∗10

⟹v=82

⟹v=11.28m/s=11.3m/s

Answer 2

Answer:

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