alleryStart learning →What centripetal force is needed for a 1,600 kg car to round a 100 m radius curve at 12 m/s?
A192 N
B1111 N
C2300 N
D13333 N
Answer & Solution
Correct answer: C. 2300 N
1. F_c = m v^2 / r.
2. F_c = (1,600 kg)(12 m/s)^2 / 100 m = (1,600)(144) / 100.
3. F_c = 230,400 / 100 = 2,304 N, which rounds to 2,300 N.
_Source: OpenStax Physics (CC BY 4.0), Ch 6 "Circular and Rotational Motion", section 6.2 Uniform Circular Motion_
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