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anonymous
 5 years ago
pls help..
a long straight rope lying on a floor is pulled along its length with uniform acceleration .If the velocities of the front & back ends of the rope when it passes through a particular point on the floor are 2 m/s & 4 m/s respectively, the velocity of the midpoint of the rope when it passes through the same point is
a. 3
b. sqrt.10
anonymous
 5 years ago
pls help.. a long straight rope lying on a floor is pulled along its length with uniform acceleration .If the velocities of the front & back ends of the rope when it passes through a particular point on the floor are 2 m/s & 4 m/s respectively, the velocity of the midpoint of the rope when it passes through the same point is a. 3 b. sqrt.10

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0If v is the velocity of the midpoint. $$2*a*\frac l2 =v^2(2)^2=(4)^2v^2$$ which gives $$v=\sqrt{10} ms^{1}$$
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