Review - Cobb Learning
... generally less than static friction (motionless friction) for most surfaces. ...
... generally less than static friction (motionless friction) for most surfaces. ...
Ch 4 – Forces and the Laws of Motion
... Both have the same acceleration – Gravity! Although the mass of the elephant is greater, so is the force. The two proportions end up equaling the same magnitude for acceleration. ...
... Both have the same acceleration – Gravity! Although the mass of the elephant is greater, so is the force. The two proportions end up equaling the same magnitude for acceleration. ...
Unit 3 – Net Force
... For most motion problems, the object in question is moving horizontally or vertically but not in both directions at the same time. Objects that are sliding up or down hills present difficulty due to the number of forces that are acting on the object as it slides because of the number of forces that ...
... For most motion problems, the object in question is moving horizontally or vertically but not in both directions at the same time. Objects that are sliding up or down hills present difficulty due to the number of forces that are acting on the object as it slides because of the number of forces that ...
Chapter 5 – Force and Motion I
... Q. A toy box is on top of a heavier dog house, which sits on a wood floor. These objects are represented by dots at the corresponding heights, and six vertical vectors (not to scale) are shown. Which of the vectors best represents (a) the gravitational force on the dog house, (b) on the toy box, (c) ...
... Q. A toy box is on top of a heavier dog house, which sits on a wood floor. These objects are represented by dots at the corresponding heights, and six vertical vectors (not to scale) are shown. Which of the vectors best represents (a) the gravitational force on the dog house, (b) on the toy box, (c) ...
Physics 170 Week 9, Lecture 1
... ⃗ = −mg k̂ and Consider a particle with two forces acting, gravity W air resistance F⃗drag = −kv 2 ût (for large or fast moving objects, air friction is approximately quadratic in the velocity and opposite in direction to it). Newton’s second law −mg k̂ − kv 2 ût = m⃗a Let us assume that a particl ...
... ⃗ = −mg k̂ and Consider a particle with two forces acting, gravity W air resistance F⃗drag = −kv 2 ût (for large or fast moving objects, air friction is approximately quadratic in the velocity and opposite in direction to it). Newton’s second law −mg k̂ − kv 2 ût = m⃗a Let us assume that a particl ...
The Nature of Force
... Bulldozers exert huge forces to move soil and rocks from one place to another. Children apply small forces to form modeling clay into interesting shapes. Force is defined as a or on an object. A force applied to an object has a tendency to change the shape and/or motion of the object. Force is a vec ...
... Bulldozers exert huge forces to move soil and rocks from one place to another. Children apply small forces to form modeling clay into interesting shapes. Force is defined as a or on an object. A force applied to an object has a tendency to change the shape and/or motion of the object. Force is a vec ...
Forces and Motion Lab Results Example
... the car has maintained a more or less constant motion, the bubble will return to the middle of the level. b. The reason the bubble moves forward intitially is that the inertia of the liquid in the level tends to make the liquid stay in the same place as the car is accelerated forward. As the car an ...
... the car has maintained a more or less constant motion, the bubble will return to the middle of the level. b. The reason the bubble moves forward intitially is that the inertia of the liquid in the level tends to make the liquid stay in the same place as the car is accelerated forward. As the car an ...
Fundamental interaction
Fundamental interactions, also known as fundamental forces, are the interactions in physical systems that don't appear to be reducible to more basic interactions. There are four conventionally accepted fundamental interactions—gravitational, electromagnetic, strong nuclear, and weak nuclear. Each one is understood as the dynamics of a field. The gravitational force is modeled as a continuous classical field. The other three are each modeled as discrete quantum fields, and exhibit a measurable unit or elementary particle.Gravitation and electromagnetism act over a potentially infinite distance across the universe. They mediate macroscopic phenomena every day. The other two fields act over minuscule, subatomic distances. The strong nuclear interaction is responsible for the binding of atomic nuclei. The weak nuclear interaction also acts on the nucleus, mediating radioactive decay.Theoretical physicists working beyond the Standard Model seek to quantize the gravitational field toward predictions that particle physicists can experimentally confirm, thus yielding acceptance to a theory of quantum gravity (QG). (Phenomena suitable to model as a fifth force—perhaps an added gravitational effect—remain widely disputed). Other theorists seek to unite the electroweak and strong fields within a Grand Unified Theory (GUT). While all four fundamental interactions are widely thought to align at an extremely minuscule scale, particle accelerators cannot produce the massive energy levels required to experimentally probe at that Planck scale (which would experimentally confirm such theories). Yet some theories, such as the string theory, seek both QG and GUT within one framework, unifying all four fundamental interactions along with mass generation within a theory of everything (ToE).