question_answer

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                          [NCERT 1977]

A)                         2 kg                 

B)                         \[(4\times g)\,kg\]            

C)                         \[(2\times g)\,kg\]            

D)                           Zero