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A balloon starting from rest ascends vertically with uniform acceleration to a height of 100 m in 10 sec. The force on the bottom of the balloon by a mass of 50 kg is $( g=10\: ms^{-2})$

$\begin {array} {1 1} (1)\;100\: N & \quad (2)\;300\: N \\ (3)\;600\: N & \quad (4)\;400\: N \end {array}$

1 Answer

(3) 600 N
answered Nov 7, 2013 by pady_1
 

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