Question

1. Reading of the spring balance in the system shown​

Answer 1

Answer:

  40/3 kg

Explanation: Given,

mass of blocks are 10 Kg and 20 Kg respectively.

Write the equation of motion in terms of T and a.

Where, T is tension and a is acceleration,

              T - 10g = 10a         ............(I)

           20g -  T = 20a          ............(II)

    add             (I)+(II)

                      a = g/3 meter/sec^2

See the attachment,

              put the value of a in (i),

              T = 40g/3 N

Spring reading T/g = 40/3 Kg.

                 

Answer 2

Answer:

A) 40/3 THIS IS THE ANSWER