Question

state and explain work energy theorem
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Answer 1

Answer:

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work energy theorem:-

▶️this theorem state that the work done by a force on the body is equal to the change in Kinetic of body

expression:- consider a body of mass ' m' moving with below initial velocity u

let' f' be the applied force so that it acerlated then

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Answer 2

Answer:

Explanation:

According to this theorm the change in kinetic energy of an object is equal to the work done by the object

⚽➡️U ----------------→ ⚽➡️V

after time (T)

|←---------Distance (d)---→|

V² = U² + 2as ( s =Distance)

V² = U² + 2ad ---( eq 1 )

Multiply eq (1) with 'm' on both side

mv² = mu² + 2 m*ad

mv² - mu² = 2m*ad

mv² - mu² = 2 F*d ( m*a = force )

½mv² +½ mu² = F*d

Kinetic energy final - Kinetic energy initial = Work (W)

W =∆K energy