JEE Main & Advanced Physics NLM, Friction, Circular Motion JEE PYQ - NLM Friction Circular Motion

A rocket with a lift-off mass \[3.5\times {{10}^{4}}\] kg is blasted upwards with an initial acceleration of \[10\,m/{{s}^{2}}\] . Then, the initial thrust of the blast is [AIEEE 2003]

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

Correct Answer: A

Solution :

[a] Here, thrust force is responsible to accelerate the rocket, so initial thrust of the blast

\[=ma=3.5\times {{10}^{4}}\times 10\]

\[=3.5\times {{10}^{5}}N\]