Question

a system is in equilibrium and at rest the spring and string are massless now the string is cut the ratio of magnitudes of mass 4m and m just after the string is cut is r then 7r is​

Answer 1

${\huge{\underline{\large{\mathbb{ \green{VERIFIED \: ANSWER}}}}}}$

Initially under equilibrium of mass m,

T=mg

Now, the string is cut. Therefore, T = mg force is decreased on mass m upwards and downwards on mass 2m.

am

= m

mg

= g

a

2m

=2m

mg

=2g