Question

How does proper inflation of tyres reduce fuel consumption?
a: Normal reaction decreases
b: Normal reaction increases
c: Sliding contact with road decreases
d: Sliding contact with road increases.
Answer is c. How and explanation?

Answer 1

to reduce fuel consuption there should be rolling friction between the tyre and the road , if the sliding friction increases the amount of fuel consuption increases , it also leads to accident hen there is more sliding friction , the sliding friction should be less to promote rolling friction so as to reduce fueel consumption