Understanding Lubricon VI and Forces

Understanding Lubricon VI and Forces

Assessment

Interactive Video

Physics, Science

7th - 12th Grade

Practice Problem

Hard

Created by

Ethan Morris

FREE Resource

The video explores the planet Lubricon VI, which does not rotate, affecting its equator. A thought experiment with a frozen sock traveling along a great circle is introduced. The video then examines the forces on a stationary frozen banana, highlighting the balance of gravity and normal force. Finally, it discusses the orbiting frozen sock, emphasizing the role of centripetal force and gravity in its motion.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a unique characteristic of Lubricon VI that affects its equator?

It has multiple equators.

It has a very high rotation speed.

It does not rotate at all.

It rotates in the opposite direction of Earth.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why can't Lubricon VI have an equator?

Because it is too far from the sun.

Because it does not rotate.

Because it is too small.

Because it is not a perfect sphere.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the path called that the frozen sock travels along on Lubricon VI?

Elliptical orbit

Great circle

Straight line

Equatorial path

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the state of motion of the frozen banana on Lubricon VI?

It is accelerating towards the center.

It is moving at a constant speed.

It is stationary.

It is rotating around the planet.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which force acts radially inward on the frozen banana?

Normal force

Centripetal force

Gravitational force

Frictional force

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What keeps the frozen banana from falling into the center of Lubricon VI?

Magnetic force

Normal force

Centripetal force

Frictional force

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the net force on the stationary banana?

Equal to zero

Less than zero

Undefined

Greater than zero

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