When an empty lift is moving down with an acceleration of g4ms−2 , the tension in the cable is 6000N. When the lift is moving up with an acceleration of g2ms−2 , the tension in the cable is,
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a
16000N
b
18000N
c
12000N
d
15000N
answer is C.
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Detailed Solution
When lift is going down,6000=m(g−g4)⇒34mg=6000⇒mg=8000NWhen lift is going up,T=m(g+g2)=32mg=12000N
When an empty lift is moving down with an acceleration of g4ms−2 , the tension in the cable is 6000N. When the lift is moving up with an acceleration of g2ms−2 , the tension in the cable is,