An object of inertia 0.5kg is hung from a spring, and causes it to extend 5cm. in an elevator accelerating downward at 2 m/s^2 , how far will the spring extend if the same object is suspended from it? draw the free body diagrams for both the accelerating and non-accelerating situations.

3.98cm

Explanation:

given data

mass of object=0.5kg

intial extension=5 cm

elevator acceleration=2 m/

From FBD of intial position

Kx=mg

K=

k=98.1 N/m

From FBD of second situation

mg-k=ma

k=m(g-a)

=

=3.98cm

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.