A body of mass $2\, kg$ is hung on a spring balance mounted vertically in a lift. If the lift descends with an acceleration equal to the acceleration due to gravity $‘g’$, if the lift moves up with a constant velocity of $2 \,m/sec$, the reading on the balance will be ......... $kg$
A body of mass $2\, kg$ is hung on a spring balance mounted vertically in a lift. If the lift descends with an acceleration equal to the acceleration due to gravity $‘g’$, if the lift moves up with a constant velocity of $2 \,m/sec$, the reading on the balance will be ......... $kg$
$2$
$4$
$0$
$1$
A body of mass $2\, kg$ is hung on a spring balance mounted vertically in a lift. If the lift descends with an acceleration equal to the acceleration due to gravity $‘g’$, if the lift moves up with a constant velocity of $2 \,m/sec$, the reading on the balance will be ......... $kg$
The lift is not accelerated, hence the reading of the balance will be equal to the true weight.
$R = mg = 2g\, N$ or $2 \,kg$
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