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| 1. |
mass 1500 kg is moving along a circular road of radius 150 m with a maximum speed of 15m/m without skidding. find(1)force of fiction (2) coefficient of friction between tyres and road |
| Answer» EXPLANATION:Given : Radius of the circular PATH r=20 m Mass of the car M=1500kg Speed v=12.5 m/s Let the coefficient of friction be μ. The centrifugal FORCE will balance the friction force so that the car does not SLIP. ∴ r mv 2 =μmg ⟹ μ= rg v 2 μ= 20×9.8 (12.5) 2 =0.8 | |