Question

A $500kg$ car takes a round turn of radius $50m$ with a velocity of $36km/h$ . The centripetal force is

• A. $250N$
• B. $750N$
• C. $1000N$
• D. $1200N$

Answer 1

Answer: (C)

Given , m = 500 kg,
$\nu =36km{h}^{-1}=36\times \frac{5}{18}=10m{s}^{-1}$ , r = 50 m
$F=\frac{m{\nu }^2}{r}$
Hence, $F=\frac{500\times (10{)}^2}{50}$ = 1000 N