two blocks $($m

$1$

$<$ m

$2$

$)$ are connected by a massless string over a massless,

frictionless pulley. The surface is also frictionless. You hold both masses initially at rest, then

give m

$1$

a push to the left. The string stays taut at all times. At the moment when m

$1$

is

instantaneously motionless $($just before moving back to the right$),$ is the tension in the string

greater than, equal to$,$ or less than m

$2$

g$?$ Explain