Explain how the definition of work in physics is different from general perception
Answers
Answer:
formula of work id
W = F . d = Fd cosФ
Ф is the angle between F & d
Explanation:
work is done if a body covers some displacement.
Due to angle, work may be done or not. for example
If a man lifts a vessel of water and moves forward, their is no any work done. Because W is downward and d is in the direction of motion
so W & d are perpendicular i.e Ф = 90° and cos90° = 0
Therefore, W = Fd (0) = 0
but generally we say that work is done which is not true.
Answer:
The term work is used in diverse contexts in daily life. It refers to both physical as well as mental work. In fact, any activity can generally be called as work. But in Physics, the.term work is treated as a physical quantity with a precise definition. Work is said to be done by the force when the force applied on a body displaces it.