Question

A straight sloping road takes a car of mass 200 kg to a height 10m through the slant distance of 20 m.Calculate the average force exerted by the engine on the car. State the assumption made. ​

Answer 1

Answer:

2 .5 N.

Explanation:

The car has a mass of 200 kg,

and it's travelling at 60 km/h.

= 200/60 = 2.5

The engine exerts a force of 2 .5 N.

Answer 2

Answer:

The force exerted by engine on car is 980N.

Explanation:

Assuming that the plane is frictionless, the force required to take a body up the slope is given by

F=mg$sin\alpha$=$\frac{mgh}{l}$

m=200kg

g=9.8m/s

h=10m

l=20m

F=200x9.8x$\frac{10}{20}$=980N