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mutineer123
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Homework Statement
http://www.xtremepapers.com/CIE/International%20A%20And%20AS%20Level/9702%20-%20Physics/9702_w10_qp_12.pdf
question 14
Homework Equations
mgh=gpE
fxd=workdone
The Attempt at a Solution
I HAVE NO IDEA WHY MY ANSWER IS WRONG! AND THIS IS GETTING ME so WORRIED ABOUT MY CONCEPTUAL UNDERSTANDING!
I found the component down the surface which was 100N, I added 150N to this(as he has to overcome the friction) so now i just use Fxd=250x1.5=375j. But the actual answer is 750j HOW COME??