Ncert Exercises & Solutions

A bicyclist comes to a skidding stop in \(10~\text m.\) During this process, the force on the bicycle due to the road is \(200~\text N\) is directly opposed to the motion. The work done by the cycle on the road is:
1. \(+2000~\text J\)
2. \(-200~\text J\)
3. zero
4. \(-20000~\text J\)

Hint: \(W=F.d\)

Step: Find the work done on the road by the cycle.
From Newton’s Third Law, an equal and opposite force acts on the road due to the cycle. Its magnitude is \(200~\text N.\) However, the road undergoes no displacement. Thus, work done by cycle on the road is zero.
Hence, option (3) is the correct answer.

NEET Information

courses

Company

Botany Questions

Chemistry Questions

Physics Questions

Zoology Questions