How Do You Calculate Total Work Done in This Physics Problem?

AI Thread Summary
To calculate the total work done on a 35-kg trunk dragged up a 12-degree ramp and then horizontally, two separate force diagrams should be drawn for each segment. The first segment involves balancing forces on the ramp, while the second focuses on the horizontal drag. Using superposition, the net forces for both cases can be determined, and the work done calculated and summed. Alternatively, vector sums can simplify the process, utilizing Pythagorean theorem for calculations. The total work done is found to be 2114 J.
MiniTank
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There is a work question which I am having difficulty getting.

A 35-kg trunks is dragged 10 m up a ramp inclined at an angle of 12 degrees to the horizontal by a force of 90 N applied at an angle of 20 degrees to the ramp. At the top of the ramp, the trunk is dragged horizontally another 15 m by the same force. Find the total work done. .. Answer = 2114 J
 
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Its basically two problems in one. Draw two force diagrams, one for the ramp, and one for the horizontal drag. Balance the forces in each and then use superposition to find net force in each case. Then find the work done in each case and sum them.
 
or you could get USE vector sums which i believe is easier, and then u can work it out using pythagoras theorem.

AEK
 

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