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?How much work is done when a weight lifter lifts \(200 kg\) from \(1.5 m\) to \(2.0 m\)
Chapter 5, Problem 1(choose chapter or problem)
QUESTION:
How much work is done when a weight lifter lifts \(200 kg\) from \(1.5 m\) to \(2.0 m\) above the ground?
Equation Transcription:
Text Transcription:
200 kg
1.5 m
2.0 m
Questions & Answers
QUESTION:
How much work is done when a weight lifter lifts \(200 kg\) from \(1.5 m\) to \(2.0 m\) above the ground?
Equation Transcription:
Text Transcription:
200 kg
1.5 m
2.0 m
ANSWER:
Step 1 of 3
The gravity exerts a force with a magnitude of
If force exerted by the lifter is , we can write as
We are subtracting from because the force applied by the weight lifter is against the gravity.