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Helium Balloon Puzzle
Solve the Helium Balloon Puzzle
Solve the helium balloon puzzle.
A helium balloon is tied with a string to the floor of a car. The windows of the car are closed. When I start the car and accelerate, in which direction will the balloon go?
Backward? Forward? Or will it stay put?
Solve the Helium Balloon Puzzle
A helium balloon is tied with a string to the floor of a car. The windows of the car are closed. When I start he car and accelerate, in which direction will the balloon go?
Backward? Forward? Or will it stay put?
Solution
- The Helium balloon will also move forward as the car accelerates.
- When the car is stationary, the air inside the car is at rest wrt to its surrounding.
- The Helium inside the Helium Balloon is also at rest wrt air
- When the car accelerates and moves forward, due to inertia it will push the air inside the car backward.
- Since Helium is lighter than air, it pushes forward and hence the balloon will also move forward.
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