1.

A mass 1 kg is suspended by a thread. It is             (i) lifted up with an acceleration \[4.9\,m/{{s}^{2}}\]             (ii) lowered with an acceleration \[4.9\,m/{{s}^{2}}\].             The ratio of the tensions is                               [CBSE PMT 1998]            

A.                         3 : 1              
B.                         1 : 3            
C.                         1 : 2                
D.                         2 : 1
Answer» B.                         1 : 3            


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