Laws Of Motion Question 304
Question: A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel. The lift starts moving upwards with an acceleration$ 1.0m/s^{2} $ . If $ g=10m{{s}^{-2}} $ , the tension in the supporting cable is
Options:
A) 8600 N
B) 9680 N
C) 11000 N
D) 1200 N
Show Answer
Answer:
Correct Answer: C
Solution:
[c] Total mass $ =(60+940)kg=1000kg $
Let T be the tension in the supporting cable,
Then $ T-1000g=1000\times 1 $
$ \Rightarrow T=1000\times 11=11000\text{ N} $
