Question

A rocket takes off from Earth's surface, accelerating straight up at 75.2 m/s². Calculate the normal force (in N) acting on an astronaut of mass 84.9 kg, including his spacesuit. (Assume the rocket's initial motion is parallel to the +y-direction. Indicate the direction with the sign of your answer.)

___N

Answer 1

$a=75.2m/s;$

$m=84.9kg;$

$F=mg+ma;$

$F=m(g+a);$

$F=84.9\sdot(9.8+75.2)=7216.5N;$

Answer: $7216.5N.$