An empty plastic box of mass m is found to accelerate up at a rate of g/6 when placed deep inside water. How much sand should be put inside the box so that it may accelerate down at the rate of g/6?
A. \(\frac { 2m }{ 3 }\)
B. \(\frac { 2m }{ 5 }\)
C. \(\frac { 3m }{ 4 }\)
D. \(\frac { 3m }{ 5 }\)
Answer:D
An empty plastic box of mass m is found to accelerate up at a rate of g/6 when placed deep inside water. How much sand should be put inside the box so that it may accelerate down at the rate of g/6?
A. \(\frac { 2m }{ 3 }\) B. \(\frac { 2m }{ 5 }\) C. \(\frac { 3m }{ 4 }\) D. \(\frac { 3m }{ 5 }\)