The energy lost due to friction is 82 J.
What is lost energy?
This is the energy lost by a body due to friction.
Note: The energy lost due to friction = Potential energy-kinetic energy.
To calculate the energy lost by friction, we use the formula below.
Formula:
- E' = mgh-mv²/2.............. Equation 1
- E' = Energy lost due to friction
- m = mass of the cart
- h = height
- v = velocity of the cart
- g = acceleration due to gravity.
From the question,
Given:
- m = 2 kg
- h = 5 m
- v = 4 m/s
- g = 9.8 m/s²
Substitute the given values into equation 1
- E' = (2×5×9.8)-(2×4²/2)
- E' = 98-16
- E' = 82 J.
Hence, The energy lost due to friction is 82 J.
Learn more about lost energy here: https://brainly.com/question/847844
