A rocket with a lift­off mass is blasted upwards with an initial acceleration of  10 m/s2  . Then the initial thrust of the blast is Option 1) Option 2) Option 3) Option 4)

As we learnt in

Rocket Propulsion -

Thrust on the rocket

F= Thrust

- wherein

Negative sign indicates direction of thrust is opposite to direction of gases

Initial thrust =( Lift - ­ off mass) $\times$ acceleration

$= \left ( 3.5\times 10^{4} \right )\times\left ( 10 \right )= 3.5\times 10^{5}N$

Correct option is 1.

Option 1)

This is the correct option.

Option 2)

This is an incorrect option.

Option 3)

This is an incorrect option.

Option 4)

This is an incorrect option.