Question

A trailer of mass $1000\, kg$ is towed by means of a rope attached to a car moving at a steady speed along a level road. The tension in the rope is $400\, N$. The car starts to accelerate steadily. If the tension in the rope is now $1650\, N$, with what acceleration is the trailer moving?

• A. $1.75\, ms ^{-2}$
• B. $0.75\, ms ^{-2}$
• C. $2.5\, ms ^{-2}$
• D. $1.25\, ms ^{-2}$

Answer 1

Answer: (D)

$\Rightarrow (1650-400) N =(1000 kg ) a^{\prime}$ or $a^{\prime}=1.25 m / s ^{2}$