How Long To Fall Through the Earth?

The video explores the concept of falling through a hollow Earth, discussing how gravity changes as one falls. It explains a simplified model assuming uniform density and calculates the fall time as 42 minutes. Adjustments for Earth's varying density show a more accurate fall time of 38 minutes and 6 seconds. The video uses physics principles to explain these calculations.

What simplification is made about the Earth's shape in the video?

• The Earth is assumed to be a cube.

• The Earth is assumed to be a perfect sphere.

• The Earth is assumed to be flat.

• The Earth is assumed to be a pyramid.

How does the gravitational pull change as you move towards the center of the Earth?

• It remains constant.

• It first increases then decreases.

• It increases significantly.

• It decreases to zero.

What is the calculated time to fall through the Earth using the simplified model?

• 30 minutes

• 42 minutes

• 50 minutes

• 60 minutes

What factor does not affect the time calculation in the simplified model?

• The gravitational constant

• The Earth's density

• The mass of the falling object

• The Earth's radius

What is the more precise time to fall through the Earth based on a detailed density profile?

• 38 minutes and 6 seconds

• 37 minutes

• 40 minutes

• 35 minutes