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Example: Work by centripetal force in circular motion.
When the angle between force and displacement is 90 degrees.
Example: Work done by gravity when a person climbs stairs.
When the angle between force and displacement is greater than 90 degrees.
Example: Pushing a door.
When the angle between force and displacement is less than 90 degrees.
Where F = Force, d = Displacement, θ = Angle between force and displacement.
Schedule of future classes.
Feedback and suggestions from students.
Discussion of live and recorded classes.
Applying constant force is difficult for humans.
Description of constant force
Scalar quantity: Work has no direction.
As a dot product: Work = F • d
Work done formula: W = F * d
Other units: Calorie, kilowatt-hour.
One Joule = 1 Newton × 1 meter
Basic unit: Joule (J)
Zero Work
Negative Work
Positive Work
When there is an angle between force and displacement, the formula: Work = F * d * cosθ
Work = Force × Displacement
Example: Kicking a football causing displacement.
In physics, work occurs when an object is displaced.
Difference between work in biology and work in physics.
Work is defined in different ways.
Understanding work, energy, and power is crucial in physics.
Start of the live class on Work, Energy, and Power chapter.
End of Class
Other Important Points
Formula and Calculation
Units of Work
Types of Work
Mathematical Description of Work
What is Work?
Introduction
Work, Energy, and Power