Question

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’, the reading on the spring balance will be

• A. $2kg$
• B. $4kg$
• C. $2kg$
• D. $Zero$

Answer 1

The correct option is D $Zero$

Reading on the spring balance = m (g – a). since a = g
$\therefore$ Force = 0