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A straight rod of length 1 extends from x =α to x-1+α as shown inthefigure.on a point mass m placed at x0 is given byy↑If the mass per unit length is (a + bx2). The gravitational force it exertsB) Gm(a +bx')(D) Gm a+blatt) |
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Answer» option (c) is correct. take the limits from alpha to alpha + l |
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