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A mass of $2.9 $ kg is suspended from a string of length $50\; cm$ and is at rest. Another body of mass $q00 \;g$, which is moving horizontally with a velocity of $150\;m/s$ strikes and sticks to it. Subsequently when the string makes an angle of $60^{\circ}$ with the vertical, the tension in the string is $(g=10 m/s^2)$

\[(a)\;140\;N \quad (b)\;135\;N \quad (c)\;125\;N \quad (d)\;90\;N \]
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(b) 135 N
answered Nov 7, 2013 by pady_1

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