Wearing a helmet is all about impulse, change in momentum and the force of impact. This video illustrates why you should secure your helmet to your head. Thank you very much to Colton and Jean Johnson who said yes when I asked them if...

I demonstrate that the magnitude of the force normal and force of gravity acting on an object are not always the same, even though many students want to assume this is true. This is an example of where showing your work is incredibly...

A book is resting on a board. One end of the board is slowly raised. The book starts to slide when the incline angle is 15°. What is the coefficient of static friction between the book and the incline?

You place a book on a 14° incline and then let go of the book. If the book takes 2.05 seconds to travel 0.78 meters, what is the coefficient of kinetic friction between the book and the incline?

Brooke has planned a surprise! Can you guess where they are going? This lesson will introduce the centripetal force and torque.<br/>
Definitions included: centripetal force, torque

Calculus based review of Simple Harmonic Motion (SHM). SHM is defined. A horizontal mass-spring system is analyzed and proven to be in SHM and it’s period is derived. The difference between frequency and angular frequency is shown. The...

Hooke’s law is demonstrated and graphed. Spring constant, displacement from equilibrium position, and restoring force are defined and demonstrated.

Understand the forces acting on an object on an incline by analyzing the forces on a “floating block”.

With the assistance of an animation, this video shows how to calculate impulse using the change in momentum.

Calculus is used to derive and define Impulse. The force as a function of time acting on a ball is demonstrated and graphed in slow motion. Want Lecture Notes?f='https://www.flippingphysics.com/impulse-area.html' target='_blank'...

The equation Work due to Friction equals Change in Mechanical Energy can often be confusing for students. This video is a step-by-step introduction in how to use the formula to solve a problem.

If you hold your feet flat or point them, does it change how far you slide. This video shows the answer and explains why using the concept of drag force.

In this video, the teacher explains how to draw free body diagrams for trusses using a specific example and walks through each step of the process.<br/>

Today, we are going to walk through an example problem. Remember, for each truss we follow the same steps:

1. Calculate the missing angles (if neces
sary)
2. Calculate static determinanc
e (2J=M+R)
3. Calculate
reaction...

Newtons Seconds Law Summary

The video is about forces and couples. It explains how forces can cause an object to translate, rotate, or both, and how a net force passing through an object's center of mass results in straight line motion. The video also introduces...

Two 0.0018 kg balloons each have approximately equal magnitude excess charges and hang as shown. If θ = 21° and L = 0.39 m, what is the average number of excess charges on each balloon?

No. You do not feel your weight. You feel the force normal acting on you. This video shows why and demonstrates what you feel on an elevator.

A uniform 0.093 kg meterstick is supported at the 15 cm and 92 cm marks. When a 0.250 kg object is placed at the 6.0 cm mark, what are the magnitudes of the forces supporting the meterstick?

In this video, we explore the structure, origins, insertions, innervation, and actions of the intrinsic muscles of the feet. This video explores layers 1 and 2.

In this video, we explore the unloader brace for knee osteoarthritis (OA), what it can be used for, and how it is thought to work mechanically.

Given certain parameters, how would you solve this problem?<br/>
Newton's Laws Of Motion With Friction, Part 4

A Toyota Prius is traveling at a constant velocity of 113 km/hr. If an average force of drag of 3.0 x 10^2 N acts on the car, what is the power developed by the engine in horsepower?

Determine the #Acceleration of a uniform, solid cylinder #RollingWithoutSlipping down an #Incline with incline angle θ. The rotational inertia of a uniform, solid cylinder about its long cylindrical axis is ½MR^2. Assume the cylinder...