Homework Help: Physics

Posted by Sydney on Sunday, November 21, 2010 at 7:41pm.

A bathysphere used for deep sea exploration has a radius of 1.50 m and a mass of 1.20 × 104 kg. In order to dive, the sphere takes on mass in the form of sea water. a) Determine the mass the bathysphere must take on so that it can descend at a constant speed of 1.20 m/s when the resistive force on it is 1 100 N upward. The density of sea water is 1.03 × 103 kg/m3.

Physics - Damon, Sunday, November 21, 2010 at 7:50pm
volume = (4/3) pi r^3 = (4/3) pi (1.5)^3
= 14.1 m^3
buoyant force = rho g V = 1.03*10^3 * 9.8 * 14.1 = 142,700 N

weight down = 1.2*10^4*9.8 = 117,600 N

net positive buoyancy = 142700-117600 = 25,100 N

Force down - 25,100 N = 1,100 N

Force down = 26,200 N
mass = 26,200/9.8 = 2673 kg

Answer this Question

Related Questions

PHYSICS - A bathysphere used for deep sea exploration has a radius of 1.60 m and...
physics - A bathysphere used for deep sea exploration has a radius of 1.60 m and...
physics - A spool of thin wire pivots on a shaft with friction. The wire is ...
physics - A solid uniform sphere has a mass of 7.0 104 kg and a radius of 1.2 m...
physics - A cylinder that has a 40.0 cm radius and is 50.0 cm deep is filled ...
Physics - The average distance separating Earth and the Moon (center to center) ...
Physics/Nautical Mile - The NM by definition is something used at sea. In my ...
Physics 1 - A 50.0-kg block and 100-kg block are connected by a string as in ...
Physics - A spherical mooring buoy 36cm in diameter with a mass of 43 kg is ...
physics - the mass of a body is 50 kg on the surface of the earth.find its ...

For Further Reading

First Name:
School Subject:
Answer: