Question

Using bicycle we can reach to our destination with less effort instead of walking. Because___

• A. bicycle produces extra energy which helps us to reach our destination in less time.
• B. rolling friction, acted on bicycle's wheels, minimizes our efforts.
• C. the shape of the bicycle minimizes the air drag which helps to move forward easily.
• D. riding with bicycle increases the normal force which increases static friction. Which helps us to move forward easily.

Answer 1

The correct option is B rolling friction, acted on bicycle's wheels, minimizes our efforts.

When we walk then static friction helps us to move forward. When we ride bicycle then rolling friction helps bicycle to move. As rolling friction is lesser than the static friction so we have to apply less force while riding bicycle.