In the figure, a stuntman drives a car (without negative lift) over the top of a
ID: 2140441 • Letter: I
Question
In the figure, a stuntman drives a car (without negative lift) over the top of a hill, the cross section of which can be approximated by a circle of radius R = 293 m. What is the greatest speed at which he can drive without the car leaving the road at the top of the hill?
In the figure, a stuntman drives a car (without negative lift) over the top of a hill, the cross section of which can be approximated by a circle of radius R = 293 m. What is the greatest speed at which he can drive without the car leaving the road at the top of the hill?Explanation / Answer
at top of the hill
Normal FOrce = N = mg - mv^2/R
for greatest speed , N = 0
mg - mv^2/R = 0
mg = mv^2/R
v^2 = Rg
speed = v = (Rg)^0.5 = 53.61277832755919 m/s