# PHYSICS

A large balloon of mass 237 kg is filled with helium gas until its volume is 318 m3. Assume the density of air is 1.29 kg/m3 and the density of helium is 0.179 kg/m3.

(b) Calculate the buoyant force acting on the balloon.
________N

(c) Find the net force on the balloon and determine whether the balloon will rise or fall after it is released.
________N

(d) What maximum additional mass can the balloon support in equilibrium?
________kg

(e) What happens to the balloon if the mass of the load is less than the value calculated in part (d)?
(X)The balloon and its load will accelerate downward.
(X)The balloon and its load will remain stationary.
(X)The balloon and its load will accelerate upward.

(f) What limits the height to which the balloon can rise?

1. 👍 0
2. 👎 0
3. 👁 733
1. The buoyant force acting on the balloon is (p1V1 - p2V2)g

where V1 = V2 = 318 m3
p1 is the density of air
p2 is the density of helium

c) The net force is the buoyant force - m*g, where m is the mass of the balloon. If the net force is positive, the balloon will rise

d BF - m*g - m(additional)*g = 0
where BF is buoyant force, m is mass of the balloon, m(additional) is additional mass

(e) for any mass less than this, the balloon will have enough buoyant force to accelerate upward.

f) I think the density of air decreases with increasing height.

1. 👍 0
2. 👎 0

## Similar Questions

1. ### AP Chem

Can someone please check these problems? 34. You fill a balloon with helium gas to a volume of 2.68 L at 23 degrees C and 789 mmHg. Now you release the balloon. What would be the volume of helium if its pressure changes to 632

2. ### Chem

A balloon contains 30.0 L of helium gas at 103 kPa. What is the volume of the helium when the balloon rises to an altitude where the pressure is only 25.0 kPa? Assume that the temperature remains constant

3. ### Physics

An empty rubber balloon has a mass of 0.012kg. the balloon is filled with helium at 0 degrees celcius, 1 atm pressure, and a density of 0.179 kg/m3. the filled balloon has a radius of 0.5 m. a)what is the magnitude of the buoyant

4. ### chemistry

A helium balloon is filled to a volume of 5.60 L at 25∘C. What will the volume of the balloon become if it is put into liquid nitrogen to lower the temperature of the helium to 77 K? A helium balloon is filled to a volume of

1. ### chem

A very flexible helium-filled balloon is released from the ground into the air at 20degree C The initial volume of the balloon is 5.00L , and the pressure is 760mmHg. . The balloon ascends to an altitude of 20Km , where the

2. ### Chemistry

Adding helium to a balloon increased its volume from 360.9 mL to 3.532 L. If the final number of moles of helium in the balloon is 22.3 mol, what was the initial number of moles of helium in the balloon? Assume the balloon

3. ### CHEM

How many grams of helium must be added to a balloon containing 8.00 g of helium gas to double its volume. Assume no temp or pressure change.

4. ### chem (boyles and charles law)

A helium filled balloon has a volume of 2.75L at 20 celsius .The volume of the balloon decreases to 2.46L after it is placed outside on a cold day.What is the outside temperature in celsius?

1. ### Chemistry

A cylinder containing 15.0 L of helium gas at a pressure of 165 atm is to be used to fill party balloons. Each balloon must be filled to a volume of 2.0 L at a pressure of 1.1 atm. What is the maximum number of balloons that can

2. ### Chemistry

Balloon- CO2 Balloon- O2 Balloon- He Balloon- N2 Balloon- CH4 Represented above are five identical balloons, each filled to the same volume at 25 degrees Celcius and 1.0 atmosohere pressure with the pure gases indicated. A) which

3. ### Science

Helium gas is added to a ballon already partially filled with helium gas the balloon inflated because the

4. ### chemistry

A weather balloon is filled with 0.295 m3 of helium on the ground at 18 °C and 756 torr. What will the volume of the balloon be at an altitude of 10 km where the temperature is 48 °C and the pressure is 0.14 atm?