- #1
nibbel11
- 36
- 2
for my own intressest i thought of a way to look i a potato could survive a 100 metre drop. my
hypothesis was abviously no not it will be potato salad when it hits the ground.
but my calculations turned against me as far as i know. here are they
average potato weight: 0,15 kg
height: 100m
i fought it would be a great start to look at Newtons second law
F=ma
and fill in the acceleration
falldistance=4,9*time2
falldistance is equal to the height because i want to now the change in time for the next formula.
so let's shuffle things around
time=√(100:4,9)=4,5s
so it takes 4,5 seconds to get 100 metre down.
than the fallvelocity=9,8*t=9,8*4,5=44,1m/s
acceleration=(44,1/(the instant moment it touches the ground let's make a assumpsion from 0,1second))=
44,1:0,1=441m/s2
than force=0,15(average potato mass)*441= 66,2N
after i found that answer i put the potato on a electrical scale while pushing it so it says 7kg because
Fz=m*g=7*9,8= 68,6N so i assumed it would simulate the same effect as the drop as the nettoforce would be the same. but while pushing on the potato nothing happened did i go somewhere wrong or is it really possible to drop a potato that high with minor harm
nibbel
hypothesis was abviously no not it will be potato salad when it hits the ground.
but my calculations turned against me as far as i know. here are they
average potato weight: 0,15 kg
height: 100m
i fought it would be a great start to look at Newtons second law
F=ma
and fill in the acceleration
falldistance=4,9*time2
falldistance is equal to the height because i want to now the change in time for the next formula.
so let's shuffle things around
time=√(100:4,9)=4,5s
so it takes 4,5 seconds to get 100 metre down.
than the fallvelocity=9,8*t=9,8*4,5=44,1m/s
acceleration=(44,1/(the instant moment it touches the ground let's make a assumpsion from 0,1second))=
44,1:0,1=441m/s2
than force=0,15(average potato mass)*441= 66,2N
after i found that answer i put the potato on a electrical scale while pushing it so it says 7kg because
Fz=m*g=7*9,8= 68,6N so i assumed it would simulate the same effect as the drop as the nettoforce would be the same. but while pushing on the potato nothing happened did i go somewhere wrong or is it really possible to drop a potato that high with minor harm
nibbel