# Acar of mass 1200 kg drives around a curve with a radius of 25.0 m. if the driver maintains a speed

Acar of mass 1200 kg drives around a curve with a radius of 25.0 m. if the driver maintains a speed of 20.0 km/hr, what is the force of friction between the tires and the road? what is the minimum coefficient of static friction required to keep the car in this turn?

## This Post Has 3 Comments

1. Expert says:

absorption lines are where light has been absorbed by the atom thus you see a dip in the spectrum whereas.

emission spectra have spikes in the spectra due to atoms releasing photons at those wavelengths.

explanation:

2. Expert says:

to treat tumors in the body

3. friendsalwaysbae says:

F=1487.52 N

μ = 0.12

Explanation:

Given that

m= 1200 kg

r= 25 m

v= 20 km/hr = 20 x 5/18 m/s

v= 5.55 m/s

To maintain the speed 5.55 m/s ,friction force should be equal to the radial force

$F=\dfrac{mv^2}{r}$

By putting the values

$F=\dfrac{mv^2}{r}$

$F=\dfrac{1200\times 5.55^2}{25}$

F=1487.52 N

So friction force = 1478.52 N

We also know that

Friction force = μ m g

1478.52 N = μ  x 1200 x 10                         ( take g =10 m/s²)

μ = 0.12

This is  minimum coefficient of static friction required to keep the car in this turn.