Go back
Jumping force

Jumping force

Posers and Puzzles

F

Joined
11 Nov 05
Moves
43938
Clock
27 Jan 10
Vote Up
Vote Down

Originally posted by FabianFnas
Put a G-meter on your head, and another G-meter on your shoe. Then make a jump from (say) two meters down to a concrete floor. What G-meter do you think measures the largest G?
Can you guess what the head-G-meter would tell? And the shoe-G-meter?
Do you think the difference would be bigger or lesser if you hit the ground with bent knees compared if you meet the floor with stiff legs and back?

If you hit the floor with head first would there be any difference from the first question?

AThousandYoung
1st Dan TKD Kukkiwon

tinyurl.com/2te6yzdu

Joined
23 Aug 04
Moves
26758
Clock
27 Jan 10
Vote Up
Vote Down

Originally posted by FabianFnas
Do you think the difference would be bigger or lesser if you hit the ground with bent knees compared if you meet the floor with stiff legs and back?

If you hit the floor with head first would there be any difference from the first question?
Both head and shoe would show less force with bent knees


Head first, head much higher force, feet very little force

wolfgang59
Quiz Master

RHP Arms

Joined
09 Jun 07
Moves
48794
Clock
27 Jan 10
Vote Up
Vote Down

Originally posted by uzless
Hmm, Ok wolfgang...so if it takes the kid 1 second to come to a rest then the answer is 100 *sqrt(2) Newtons.

Man, what a thoroughly unsatisfying answer.

I was hoping for a simple 300 pounds or something. Kind of like how if you are in an airplane and the pilot banks hard right you'd feel 2 or 3 G's so you could easily just say that in the turn a 100 pound person would feel like they were 300 pounds in a 3G turn.
Man, what a thoroughly unsatisfying answer.

Sorry. Satisfaction not always guaranteed.
😛

Cookies help us deliver our Services. By using our Services or clicking I agree, you agree to our use of cookies. Learn More.