Question

A truck tows a jeep of mass $1200kg$ at a constant speed of $10ms$${}^{-1}$ on a level road. The tension in the coupling is $1000N$. If they ascend an inclined plane of $si{n}^{-1}\left(1/6\right)$ with same velocity, the tension in coupling is:

• A. $2000N$
• B. $2960N$
• C. $1680N$
• D. $1000N$

Answer 1

The correct option is B $2960N$

When the towing truck is ascending, the weight force component along the plane, of the truck adds to tension of the coupling.
$T^{\prime }=T+mgsin\theta$
$T^{\prime }=1000+1200\times 9.8\times \frac{1}{6}=1000+1960=2960J$
Option B.