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Mathematics: Post your doubts here!
cant solve Q:1, 3 ,4 P42 oct/nov/09 Q:3 , 5 and 7 Oct/Nov/2010 P42 plzzzzzzzzzz help . . .. . . . .plzzzzzzzzzz :( :cry: -
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Mathematics: Post your doubts here!
ummm u misunderstood . ... its mechanics P4 -
Mathematics: Post your doubts here!
cant solve Q:1 P42 oct/nov/09 Q:3 , 5 and 7 Oct/Nov/2010 P42 plzzzzzzzzzz help . . .. . . . . :( -
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Mathematics: Post your doubts here!
cant solve Q:1 P42 oct/nov/09 .. . .. .. . .. . -
Mathematics: Post your doubts here!
i thnk v r supposed to do this way: gain in PE = WD by driving force + KE -WD against resistance 12500*10*h = 3300000+2100000-2400000 h = 24m [(i hv convrtd the values into joules i dnt undrstand y i cnt do it wen in KJ:/) WD =F*d WD against resistance = 4800*500 = 2400000] -
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Mathematics: Post your doubts here!
ohh m sorry evn i cnt do that :P i tried a lot of tym :( -
Mathematics: Post your doubts here!
as i said b4 m nt rele sure go to this website http://www.examsolutions.co.uk/maths-revision/index.php#Mechanics it might b helpful -
Mathematics: Post your doubts here!
well i m not sure bt i thnk it depends if the particle is moving up or down -
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Mathematics: Post your doubts here!
(i) total work done = increase in KE + R WD= 1/2m(v^2-u^2) + 5000 WD = 1/2*12500*(25^2-17^2) + 5000 WD = 2100000J+5000 WD = 2100KJ+5000 WD = 7100KJ -