Question

An lemming with a jet pack accelerates upward at 4.3 m/s2. If the lemming ( with the jet pack) has a mass of 55 kg. What is the upward force applied by the jet pack

Answer 1

a=4.3m/sec²

m=55kg

Force(F')=ma

$F_g=mg$

$F=F_g+F'$

$F=mg+ma$

$F=m(g+a)$

Pu value

$F=55(9.8+4.3)$

$F=(55\times14.1 )N=775.5N$