A frog in a hemispherical pod just floats without sinking into a pond with density 1.35 g/cm^3. If the pod has radius 6 cm and negligible mass, what is the mass of the frog?

Question

wouldn't one need the thickness of the pad? And what has the density given? The pond water, or the frog?

?????

Answer 1

Fg=Fb

m . g = d . V . g

m = d . V

m = (1,35 . 1000 kg per m cube) 2/3 pay ( .06 m )cube

m = 41 kg