Question

If the blocks move with the same acceleration then change in the length of spring is:​

Answer 1

Answer:i think the answer is Zero

Explanation:

Answer 2

Given:

Mass of block 1= 40kg

Mass of block 2= 60kg

Spring constant= 100N/m

To find:

Extension in spring

Solution:

The net force acting on system = 60N-40N=20N

Let a be the acceleration of two boxes and y be the extension in spring

For block 1,

20-100y=40a

For block 2,

100y=60a

Solving the two equations,

60-300y=200y

or y=6/50m = 0.12m

Hence, extension in spring is c) 0.1m.