A man weighs 80 kg. He stands on a weighing scale in a lift which is moving upwards with a uniform acceleration of\[5m/{{s}^{2}}\]. What would be the reading on the scale?\[(g=10\,m/{{s}^{2}})\]
A) 400 N
B) 800 N
C) 1200 N
D) Zero
Correct Answer:
C
Solution :
For accelerated upward motion \[R=m(g+a)=80(10+5)=1200N\]