An empty plastic box of mass m is found to accelerate up at the rate of g/6 when place deep inside water. How much sand should be put inside the box so that it may accelerate down at the rate of g/6?

An empty plastic box of mass m is found to accelerate up at the rate o

1.	An empty plastic box of mass m is found to accelerate up at the rate of g/6 when place deep inside water. How much sand should be put inside the box so that it may accelerate down at the rate of g/6?
Answer» m/5 2m/5 3m/5 4m/5 Answer :B