Friday

November 28, 2014

November 28, 2014

Posted by **Mike Joseph** on Sunday, June 17, 2012 at 7:55pm.

If the car is traveling at 98 km/h, how much friction force will be required?

I cannot figure out how to solve this problem. Someone please help me?

- Physics -
**Elena**, Monday, June 18, 2012 at 3:09amΣFy = N• cos θ − mg − f •sin θ = 0

ΣFx = N• sin θ + f •cos θ = m•v²/R,

where f –friction force

Solving the 1st equation for N, we obtain

N =( f •sin θ + m•g)/cos θ,

Substitute N to the 2nd equation and obtain friction force

f =m[(v²•cosθ/R) - g•sinθ].

f=1400[27²•cos14/57 – 9.8•sin18} =

=1400[12.4-2.04] =14000 N

**Answer this Question**

**Related Questions**

Physics - A 1400-kg car rounds a curve of 57-m banked at an angle of 14 degrees...

Physics of Vehichle - A 1400 kg car rounds a curve of 57 m banked at an angle ...

physics - How much friction force will be required if a car weighing 2100kg ...

physics - A 2100 kg car rounds a curve of 67 m banked at an angle of 13. If the ...

Physics - A 1000 kg car rounds a curve of radius 70 m banked at an angle of 12...

Physics - A car, having a mass of 1.2 x 10^3kg rounds a curve which is banked at...

Physics - A 2000kg car rounds a curve of 65m banked at an angle of 11∘ How...

physics - A highway curve with a radius of 650 m is banked properly for a car ...

PHYSICS - A highway curve with a radius of 750 m is banked properly for a car ...

physics - A highway curve with a radius of 430 m is banked properly for a car ...