Question

in figure is in equilibrium
and at rest. The spring and string
are
massless, now the string is cut. The
acceleration of the masses 2m and m just
after the string is cut, will be
(a) upwards, g downwards
(b) g upwards, 5 downwards
2
©g upwards, 2g downwards
(d) 2g upwards, g downwards​

Answer 1

Answer:

a

Explanation:

kx = 3mg

x = 3mg/k

kx - 2mg = ma

a = g

For mass m :

mg = ma

a = g