Prove work energy theorem
Answers
State and prove work energy theorem. Answer: Work energy theorem states that the change in kinetic energy of an object is equal to the net work done on it by the net force
The formula for net work is net work = change in kinetic energy = final kinetic energy - initial kinetic energy. The work energy theorem, this is a theorem that states the net work on an object causes a change in the kinetic energy of the object.
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