Newton's laws of motion -- Force of gravity on a skydiver

[kara123]

Homework Statement

A 75 kg skydiver jumps out of an airplane. Calculate the force of gravity acting on him when he jumps and after he has landed. Explain any differences

Relevant Equations

Fnet=ma

I think you would do force of gravity= mass x acceleration

acceleration of gravity= 9.8 m/s
mass 75 kg
75kg x 9.8 m/s
=735 N

i don't know if that's right but i have no idea how to calculate it after he lands, any help would be greatly appreciated!

 

[Doc Al]

i don't know if that's right but i have no idea how to calculate it after he lands

Looks good to me. Question for you: Does the force of gravity change when he lands?

 

[russ_watters]

... i have no idea how to calculate it after he lands, any help would be greatly appreciated!

It's a trick question. Knowing that, take a shot at it.

 

[kara123]

Looks good to me. Question for you: Does the force of gravity change when he lands?

it does not so it would remain the same after he lands then. The force of gravity would only change in this situation if the mass changes?

 

[Doc Al]

it does not so it would remain the same after he lands then. The force of gravity would only change in this situation if the mass changes?

Right! As @russ_watters said, it's kind of a trick question.

 

[kara123]

Right! As @russ_watters said, it's kind of a trick question.

awesome, thank you and @russ_watters for the help!