Analyzing the forces acting on a bucket of water which is revolving in a vertical circle.

Want Lecture Notes? This is an AP Physics 1 topic.

A big thank you to Mr. Becke for being a guest in today’s video!

Content Times:

0:11 The demonstration

0:24 Drawing four Free Body Diagrams

1:30 Summing the forces with the bucket at the bottom

2:27 What is the centripetal force?

3:28 Why the Force Normal greater than the Force of Gravity with Mr. Becke!

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Previous Video: Demonstrating Why Water Stays in a Bucket Revolving in a Vertical Circle

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Yes, water stays in the bucket. Would you like to know why? Watch the video and learn!

Want Lecture Notes? This is an AP Physics 1 topic.

Content Times:

0:14 The demonstration

0:52 Why does water flow out of a bucket?

1:40 Inertia!

2:38 Visualizing why

Next Video: Analyzing Water in a Bucket Revolving in a Vertical Circle

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Previous Video: Determining the Force Normal on a Toy Car moving up a Curved Hill

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]]>A 0.453 kg toy car moving at 1.15 m/s is going up a semi-circular hill with a radius of 0.89 m. When the hill makes an angle of 32° with the horizontal, what is the magnitude of the force normal on the car?

Want Lecture Notes? This is an AP Physics 1 topic.

Content Times:

0:08: Translating the problem

1:01 Clarifying the angle

1:51 Drawing the free body diagram

3:20 Summing the forces

4:22 How the tangential velocity and force normal change

Next Video: Demonstrating Why Water Stays in a Bucket Revolving in a Vertical Circle

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Previous Video: Mints on a Rotating Turntable - Determining the Static Coefficient of Friction

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]]>What is the maximum linear speed a car can move over the top of a semi-circular hill without its tires lifting off the ground? The radius of the hill is 1.8 meters.

Want Lecture Notes? This is an AP Physics 1 topic.

Content Times:

0:08 Translating the problem

0:42 Drawing the free body diagram and summing the forces

1:45 Why the force normal is zero in this situation

2:26 Finishing the problem

Next Video: Determining the Force Normal on a Toy Car moving up a Curved Hill

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Previous Video: Introductory Centripetal Force Problem - Car over a Hill

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]]>A 453 g toy car moving at 1.05 m/s is going over a semi-circular hill with a radius of 1.8 m. When the car is at the top of the hill, what is the magnitude of the force from the ground on the car?

Want Lecture Notes? This is an AP Physics 1 topic.

Content Times:

0:08 Translating the problem

1:49 Drawing the free body diagram

2:43 We need to sum the forces in the in-direction

3:22 The “in-direction” is positive. The “out-direction” is negative

4:06 Identifying the centripetal force in this problem

4:54 Solving the problem … finally.

6:15 Kit compares the magnitudes of the force normal and force of gravity

Thank you to Kit from Gorilla Physics for your help with this video!!

Next Video: What is the Maximum Speed of a Car at the Top of a Hill?

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Previous Video: Centripetal Force Introduction and Demonstration

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]]>Learn why a centripetal force exists, three important things to remember about centripetal force, and drawing free body diagrams for objects moving in circles.

Want Lecture Notes? This is an AP Physics 1 topic.

Content Times:

0:01 Newton’s Second Law for Centripetal Force

1:10 Three things to remember about Centripetal Force

2:41 Drawing a free body diagram

3:57 Why we sum the forces in the “in-direction”

Next Video: Introductory Centripetal Force Problem - Car over a Hill

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Previous Video: Introductory Centripetal Acceleration Problem - Cylindrical Space Station

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]]>A cylindrical space station with a radius of 115 m is rotating at 0.292 rad/s. A ladder goes from the rim to the center. What is the magnitude of the centripetal acceleration at (1) the top of the ladder, (2) the middle of the ladder, and (3) the base of the ladder? Want Lecture Notes? This is an AP Physics 1 topic.

Content Times:

0:12 Translating the problem

1:14 Solving the problem

2:54 Interpreting the results - Artificial Gravity

4:30 What do you feel on the ladder?

Next Video: Centripetal Force Introduction and Demonstration

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Previous Video: Centripetal Acceleration Introduction

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]]>Why is there a “center seeking” centripetal acceleration? A step-by-step walk through of the answer to this question.

Want Lecture Notes? This is an AP Physics 1 topic.

Content Times:

0:09 Which mint has the largest angular velocity?

1:14 What do we know about the angular and tangential accelerations of the mints?

2:21 What do we know about the tangential velocity of mint #3?

3:39 Centripetal acceleration introduction

4:44 The centripetal acceleration equations

5:35 The units for centripetal acceleration

Next Video: Introductory Centripetal Acceleration Problem - Cylindrical Space Station

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Previous Video: Demonstrating the Directions of Tangential Velocity and Acceleration

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