Question

A block of mass 10 kg is suspended through two light springs which are balanced as shown in the figure. Then

• A. both the scales will read 10 kg.
• B. both the scales will read 5 kg.
• C. the upper scale will read 10 kg and the lower one zero.
• D. the readings may be of any value, but their sum will be 10 kg.

Answer 1

The correct option is A both the scales will read 10 kg.

As in Equilibrium.
From the FBD of the mass and spring balance,
$10g=TT=T_1{T}_1=T_2\Rightarrow T_1=T_2=T=10g\text{N}$
Therefore both scales will read $\frac{10g}{g}=10kg$.