answering in reverse order,
8) m(2)g-T=m(2)a and T- mew m(1)g=m(1)a, solve T, u will get T=m(1)m(2)g(1- mew)/(m1+m2), put values and get answer.
7)T=m(g-a)=8408 newton
6)0=u^2-2(mew g)s get mew=u^2/2gs=.05
5) did not understand the question(if the ans is 350 newton, please reply)
4)Fcos theta=24, put F=30.1 to get cos theta
3)T1=T2 cos theta
T2sin theta=mg solve T1=mg cot theta
1)use free body diagramme on left body (20 kg)
T=20 a=20 * .5=10 newton
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Last edited by r.samanta; Oct 25th 2009 at 10:13 PM.
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