Asked by Ken
Alexa is weighing a construction barrel up a ramp 4 feet long into the back of a truck. The barrel weighs 120 pounds and the ramp is 45 degrees from the horizontal. How much work is Alexa doing?
Answers
Answered by
oobleck
work done = PE gained = mgh
so, how high is the top of the ramp?
so, how high is the top of the ramp?
Answered by
You're welcome
339 ft-lb
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