Q. A rocket with a lift-off mass $3.5 \times 10^{4}$ kg is blasted upward with an initial acceleration of ${10\ ms}^{- 2}$. Then the initial thrust of the blast is
A) $3.5 \times 10^{5}\ $N
B) $7.0 \times 10^{5}$ N
C) $14.0 \times 10^{5}$ N
D) $1.75\ \times 10^{5}$N
Explanation
(a) Here, thrust force is responsible to accelerate the rocket, so initial thrust of the blast.
$= ma$
$= 3.5\ \times 10^{4} \times 10$
$= 3.5 \times 10^{5}$ N
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.