Let the normal force exerted by the seat on the driver be F.
M g - F = M a = M V^2/R
F = M (g - V^2/R)
Use that equation to compute F when V = 23 m/s.
The mass cancels out.
For the last part, solve for V when F = 0.
V = sqrt(Rg)
A sports car of mass 1300 kg (including the driver) crosses the rounded top of a hill (r = 86 m) at 23 m/s. Determine the normal force exerted by the car on the 74 kg driver. Determine the car speed at which the normal force on the driver equals zero.
1 answer