Recent content by vincekillics

net force should be 0 ? but Fmg > Fb on sinking object ?

must be 0m/s^2 right?

Homework Statement It is time for aged physics lecturers to have their flu shots but even that can be interesting. Assume the density of the vaccine in the syringe is the same as the density of water. The diameter of the syringe is 6mm, the length of the needle is 3cm and by reading the packet...

Hi, thanks for answering, but I still struggle to find the answer, I know that the rov would have to change its density to sink, the problem is I don't understand how to correlate the sinking velocity to the F=mg

Homework Statement A small spherical under water ROV (remotely operated vehicle) has a radius of 0.5m and a mass of 450kg. It sinks or rises in the ocean by taking water on board or pumping it back out again. How much water must it take on board to sink at a constant velocity of 1.2m/s. The...