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A car of mass 1000 kg moves on a circular road with a speed of 20 m/s. Its direction changes by 90° after traveling 628 m on the road. The centripetal force acting on the car is (a) 500 N (b) 1000 N (c) 1500 N (d) 2000 N

A car of mass 1000 kg moves on a circular road with a speed of 20 m/s. Its direction changes by 90° after traveling 628 m on the road. The centripetal force acting on the car is
(a) 500 N
(b) 1000 N
(c) 1500 N
(d) 2000 N

Grade:Upto college level

1 Answers

Alicia Cotta
27 Points
4 years ago
We know that, s=rθ
Since it changes its direction after travelling 628m. Using the above formula,  628=r(π/2).
Solving further we get, r=400
Now centripetal force= mv2/r 
Further substituting the value of r above we get answer (b)
 
 
 

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