A rocket with a lift-off mass 3.5 x 104 kg is blast upward with an initial acceleration of 10 ms-2. Then, the initial thrust of the blast is [AIIMS 2012]
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a
1.75 x 105 N
b
3.5 x 105 N
c
7x105 N
d
14x105 N
answer is C.
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Detailed Solution
Initial thrust must bem(g+a)=3.5×104(10+10)=7×105 N