Important Forces: Normal Force
Über den Vortrag
Der Vortrag „Important Forces: Normal Force“ von Jared Rovny, PhD ist Bestandteil des Kurses „Force“.
Quiz zum Vortrag
Why is the Normal Force called “normal”?
- It is perpendicular to the surface exerting it.
- It is the most typical of the forces.
- It is the average of forces between any two surfaces.
- It is in contrast to the “abnormal” friction force.
- It is a reference to the name of its discoverer.
If an object is at rest on a surface, what must be TRUE about it?
- Its acceleration must be zero.
- Its acceleration must be positive to stay above the surface.
- It cannot have any downwards forces acting on it.
- Gravity is not acting on it because it cannot move into the surface.
- The Normal force will pull it to the surface.
An object is sliding down a slope that makes an angle θ with the ground, and a force of gravity F₉ is acting on it. What is the magnitude and direction of the net force acting on the object?
- F₉sinθ with a direction parallel to and down the slope
- F₉ with a direction parallel to and down the slope
- F₉cosθ with a direction parallel to and down the slope
- F₉cosθ with a direction perpendicular to the slope
- F₉ with a downward direction falling to the ground
A slope makes an angle θ with the ground with an object resting on it. A gravitational force F₉ acts on the object. What are the parallel and perpendicular components of F₉ to the slope?
- Parallel component of F₉ = F₉sinθ, Perpendicular component of F₉ = F₉cosθ
- Parallel component of F₉ = F₉cosθ, Perpendicular component of F₉ = F₉sinθ
- Parallel component of F₉ = F₉, Perpendicular component of F₉ = F₉cosθ
- Parallel component of F₉ = F₉sin²θ, Perpendicular component of F₉ = F₉cos²θ
- Parallel component of F₉ = F₉sinθ, Perpendicular component of F₉ = F₉
Diese Kurse könnten Sie interessieren
Dozent des Vortrages Important Forces: Normal Force
Jared Rovny, PhD
Dr. Jared Rovny has been a Lecturer at Yale University in Connecticut, USA since 2013.
He obtained his PhD in Physics from Yale University in 2019. He was awarded the D. Allan Bromley Graduate Fellowship in Physics in 2019 and the Princeton Quantum Institute Postdoctoral Fellow in 2020.
Currently, he works with Yale's Center for Teaching and Learning at Yale University.
Due to his achievements, he earned the Yale College Prize Teaching Fellowship for his work in PHYS 171 (University Physics for the Life Sciences).
Within Lecturio, Dr. Rovny teaches courses on Physics.
Kundenrezensionen
5,0 von 5 Sternen
| 5 Sterne |
|
5 |
| 4 Sterne |
|
0 |
| 3 Sterne |
|
0 |
| 2 Sterne |
|
0 |
| 1 Stern |
|
0 |
