Question

A 10kg bike is pulling a package box from a frictionless floor. The bike started from rest and speed up to 12 m/s. If the tension on the rope has a limitation of 150N, answer the succeeding questions.What is the acceleration of the bike?

What is the minimum time before the rope breaks?

Answer 1

Assupe that the mass of the package box is $5 \ kg$.

$a=150/5=30\ (m/s^2)$

$v=at\to t=v/a=12/30=0.4\ (s)$