A 500kg car takes a round turn of radius 50m with a velocity of 36km/h. The centripetal force acting on the car is:
A
250N
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B
750N
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C
1000N
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D
1200N
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Solution
The correct option is C1000N The centripeatal force required for a car (mass m) to take a sharp turn of radius r with velocity v is F=mv2r Given m=500kg v=36km/h=36×518=10m/s, r=50m Hence, F=500×(10)250=1000N