An unbanked curve has a radius of 60 m. The maximum speed at which a car can make a turn if the coefficient of static friction is 0.75, is

Question

An unbanked curve has a radius of 60 m. The maximum speed at which a car can make a turn if the coefficient of static friction is 0.75, is (A) 2.1 m/s (B) 14 m/s (C) 21 m/s (D) 7 m/s

Tardigrade Admin · Accepted Answer

vmax=√μ rg =√0.75×60×9.8 =21 m/s

Q. An unbanked curve has a radius of $60 m$ . The maximum speed at which a car can make a turn if the coefficient of static friction is $0.75$ , is

$2.1 m / s$

$14 m / s$

$21 m / s$

$7 m / s$

$v_{ma x} = μ r g$

$= 0.75 \times 60 \times 9.8$

$= 21 m / s$

Q. An unbanked curve has a radius of 60m. The maximum speed at which a car can make a turn if the coefficient of static friction is 0.75, is

2.1m/s

14m/s

21m/s

7m/s