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![[Post New]](/templates/default/images/icon_minipost_new.gif) 28 Dec 2007 18:23:55 IST
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Two ships A and B originally at a distance 'd' from each other depart at the same time from a straight coastline. Ship A moves along a straight line perpendicular to the shore while ship B constantly heads for ship A, having at each moment the same speed as the latter. After a sufficiently great interval of time the ship will obviously follow that first one at a certain distance. Find the distance.
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Ans = d/2
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28 Dec 2007 21:34:46 IST
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r they farer perpendicularly or horizontally (the shps).
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2 Jan 2008 14:13:12 IST
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The coastline is straight and the ships are located at a distance 'd'.
One ship moves Perpendicular to the coast line and the 2nd ships moves towards the former...
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2 Jan 2008 23:38:32 IST
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plz. answer this one.
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3 Jan 2008 14:26:05 IST
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Q.1 Pls solve the previous one.
Q.2 A plank of mass m1 with a bar of mass m2 placed on it lies on a smooth horizontal plane. A horizontal force growing with time t as F= at ( a is constant) is applied to the bar. Find out how the accelerations of the plank w1 and of the bar w2 depend on t, if the coefficient of friction between the plank and the bar is equal to k. Draw the approx. plots of these dependencies.
Ans2 : 
When t t0, the accelerations w1 = w2 = at/ (m1+m2);
When t>t0, w1=kgm2/m1 and w2 = (at-km2g)/m2
.... here t0=kgm2(m1+m2)/am2
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3 Jan 2008 14:27:23 IST
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whats t0? question is not very clear dude
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Will nip in at times to solve problems :)
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3 Jan 2008 21:41:07 IST
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t0 comes up in the answer itself. There's no t0 in the question.
The motion changes after the time t0. Thats why it has been brought to use!
Plz solve the questions!!
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