Recent content by novelized

I calculated the mass of helium to be .047718 kg. Is the mass of air displaced equal to this too? And this would be equal to mass of string * height + mass of envelope?

Homework Statement A helium-filled balloon is tied to a 2.00-m-long, 0.0500-kg uniform string. The balloon is spherical with a radius of 0.400m. When released, it lifts a length h of string and then remains in equilibrium, as in the figure. Assuming envelope of the balloon has mass 0.250...

Homework Statement A block of unknown mass is attached to a spring with a spring constant of 8.3 N/m and undergoes simple harmonic motion with an amplitude of 12.0 cm/s. For the block, calculate its: a) mass, b) period of motion, c) maximum acceleration and d) energy. I can...