Q. A person of mass $60\ kg$ is inside a lift of mass $940\ kg$ and presses the button one control panel. The lift starts moving upwards with an acceleration $1.0\ m/s^{2}$. If $g = 10\ ms^{- 2}$, the tension in the supporting cable is
A) $1200\ N$
B) $8600\ N$
C) $9680\ N$
D) $11000\ N$
Explanation
(d) $T = (M + m)(g + a) = (940 + 60)(10 + 1) = 11000\ N$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.