Answer :
The magnitude of the friction force required to keep the car from sliding is 13112 N.
Calculation:-
friction force = centripetal force
= mv^2 / R
= 1000*30^2 / (200/2)
= 9000 N
so option B) 9000 N is the correct answer
15) net force = mv^2 / R
= 250*(96.5*5/18)^2 / 13.7
= 13112 N = 1.31*10^4 N
Friction is the force resisting the relative motion of sturdy surfaces, fluid layers, and material factors sliding towards each specific. There are numerous styles of friction Dry friction is a strain that opposes the relative lateral movement of two stable surfaces in touch.
Friction is the shape of contact pressure. It exists between the surfaces that are in touch. The frictional force relies upon the character of the floor in contact. The rougher the ground, the extra friction is involved. The frictional force is proportional to the urgent pressure, which is the burden of the body. it's miles impartial of the place of the touch.
Learn more about friction here:-https://brainly.com/question/24338873
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