Ameterstick is initially balanced on a fulcrum at its midpoint. you have four identical masses. three of them are placed atop the meterstick at the following locations: 27cm , 38cm , and 99cm .where should the fourth mass be placed in order to balance the meterstick?

it is given that trillions of microbes make up to 1% to 3% of the body mass.

let's take average of this percentage: 2%

consider the average mass of the human body as 70 kg.

then, trillions of microbes would have mass  

therefore, 100 trillion micro-organisms would weigh:

this is an approximate value and could change depending on the mass of the human body and percentage of the microbes present in it.

average mass per microorganism =

the ima (higher than 1m) will be greater than the ima with the height of 1m.