What force does the astronaut exert on his chair when accelerating upwards at 11 m/s^2?
just use, force=mass xnet acceleration
= mass [acceleration due to gravity+ acceleration of the chair]
= 63x [ 9.8 + 11]
= 63×20.8=1310.4 newtons
a) Actually, you want to know your weight. it’s the stress that gravity will put on him to keep him on the earth, so it would be a similar stress he’s going to say to the chair. Mass x gravitational field strength = weight on Earth the gravitational field strength is about 9.82N/Kg So 70×9.80 two = 687.4 Newtons. b) for every action there is an equivalent and opposite reaction. This therefore means that the stress which lifts it would be a tension similar to that which it would exert on the chair. voltage = mass x acceleration 70 x7.2 = 504 newtons
Try to draw the astronaut and all the forces that must act on him; for example, at rest, it is your normal weight and reaction force. This will help you find out.
a) 63 x 9.81 newtons
God bless you.