Question

A rocket of mass 2000kg produce a thrust of 3000N during take off calculate the acceleration of the rocket. Given g=10

Answer 1

Explanations & Calculations

• The acceleration during the take off can be obtained by application of Newtons second law to the rocket's motion upwards

$\qquad\qquad \begin{aligned} \small \uparrow \\ \small F&=\small ma\\ \small T-mg&=\small ma\\ \small a&=\small \frac{3000\,N-2000\,kg\times10\,ms^{-2}}{2000\,kg}\\ &=\small -8.5 \end{aligned}$

• This is an erroneous result due to the given thrust value being too low. Do check the question again.