# A person can lift 45 kg ( ~~100 lb). Using the experimental value of the specific gravity for the metal object 8.50 cgs, how many cubic meters of the metal could the person lift (a) in air, (b) in water? How many actual kilograms of metal is this in air, and in water?

A person can lift $45kg\left(\approx 100lb\right).$ Using the experimental value of the specific gravity for the metal object 8.50 cgs, how many cubic meters of the metal could the person lift (a) in air, (b) in water? How many actual kilograms of metal is this in air, and in water?
You can still ask an expert for help

• Questions are typically answered in as fast as 30 minutes

Solve your problem for the price of one coffee

• Math expert for every subject
• Pay only if we can solve it

Ryan Davies
Mass which the person can lift $=45kg$
$\rho =8500kg/{m}^{3}$
In air, the man can lift $45/8500{m}^{3}$
$=0.0053{m}^{3}$
In water, there is force of buoyance acting on the body from downwards. So, effectively, the density of the body becomes $8500-1000=7500kg/{m}^{3}$
So, find the amount of volume like that in the previous case.
In air, it was 45 kgs