Assuming that the mass m of the largest stone that can be moved by a flowing river depends upon the velocity `upsilon,` of water, its density `rho` and acceleration due to gravity g, then m is directly proportional to

Explanation

`m = k upsilon^a rho^b g^c`
`[M^1 L^0T^0] =[LT^(-2)]^c`
`=M^b L^(a-3b +c) T(-a -2c)`
Proceed as in Q. 36.