Question

If the vehicle mass is 800 kg, what is the gradient force (approximate value in N) caused by the road gradient 10%?

(a) 500 N

(b) 600 N

(c) 700 N

(d) 800 N

I got this question by my college director while I was bunking the class.

I want to ask this question from Vehicles and Powertrain in division Emission Control Methods, Electric & Conventional Vehicles of Automobile Engineering

Answer 1

Correct option is (d) 800 N

To explain I would say: Fgradient = mvehicle * g * sin (α).  For small angle, sin (α) = α. Hence, α = 10% = 0.1 rad. Taking g = 10 m/s^2, Fgradient = 800*10*0.1 = 800 N.