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Calculate the work done by an 85.0-kg man who pushes a
Chapter 7, Problem 5(choose chapter or problem)
Calculate the work done by an \(\text { 85.0-kg }\) man who pushes a crate \(4.00 \mathrm{~m}\) up along a ramp that makes an angle of \(20.0^{\circ}\) with the horizontal. (See Figure \(7.35\).) He exerts a force of \(500 N\) on the crate parallel to the ramp and moves at a constant speed. Be certain to include the work he does on the crate and on his body to get up the ramp.
Figure \(7.35\) A man pushes a crate up a ramp.
Equation Transcription:
Text Transcription:
85.0-kg
4.00 m
20.0 degrees
500 N
7.35
Questions & Answers
QUESTION:
Calculate the work done by an \(\text { 85.0-kg }\) man who pushes a crate \(4.00 \mathrm{~m}\) up along a ramp that makes an angle of \(20.0^{\circ}\) with the horizontal. (See Figure \(7.35\).) He exerts a force of \(500 N\) on the crate parallel to the ramp and moves at a constant speed. Be certain to include the work he does on the crate and on his body to get up the ramp.
Figure \(7.35\) A man pushes a crate up a ramp.
Equation Transcription:
Text Transcription:
85.0-kg
4.00 m
20.0 degrees
500 N
7.35
ANSWER:
Solution
Step 1
We have to calculate the work done that includes the work on the crate on his body to get up the ramp.Given mass of a man is 85 kg, displacement along a ramp is 4m
To find the work done along a ramp is we use