1.

A car moving on circular level road if radius of curvature 300m if coefficient of friction is 0.3 and accelerates due to gravity the minimum speed of car

Answer»

Answer:

30 m/s

Explanation:

When the CAR is moving on a level circular ROAD then, centripetal force is supplied by frictional force

mv²/r = μmg

v = √(μrg)

v = √(0.3 × 300 m × 10 m/s²)

= √(900 m²/s²)

= 30 m/s

This is the maximum speed the car can travel, ALSO called safe.



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