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lgbasallote
 3 years ago
In 1990, walter arfeuille of belgium lifted a 281.5 kg object through a distance of 17.1 cm using only his teeth
(a) how much work was done on the object by arfeuille in this lift, assuming the object was lifted at constant speed?
lgbasallote
 3 years ago
In 1990, walter arfeuille of belgium lifted a 281.5 kg object through a distance of 17.1 cm using only his teeth (a) how much work was done on the object by arfeuille in this lift, assuming the object was lifted at constant speed?

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lgbasallote
 3 years ago
Best ResponseYou've already chosen the best response.1im thinking \[\Delta U_{GRAV}?\]

lgbasallote
 3 years ago
Best ResponseYou've already chosen the best response.1so \[\implies (281.5)(9.8)(00.171)?\] i change this to meters right?

rajathsbhat
 3 years ago
Best ResponseYou've already chosen the best response.10.171 is in metres already. I don't get your question.

rajathsbhat
 3 years ago
Best ResponseYou've already chosen the best response.1that multiplication is the answer though..

lgbasallote
 3 years ago
Best ResponseYou've already chosen the best response.1the given was 17.1 i was confirming that i needed to change that to meters

rajathsbhat
 3 years ago
Best ResponseYou've already chosen the best response.1ah, yes, it is 0.171 that you need you need to use.

CarlosGP
 3 years ago
Best ResponseYou've already chosen the best response.0His work was used to increase potential energy of the weight, therefore you can calculate like W=mgh=281.5x9.81x0.171 J I have heard that the work done later on by his dentist to fix his dentures was quite hard

lgbasallote
 3 years ago
Best ResponseYou've already chosen the best response.1a follow up question was (b) What total force was exerted on arfeuille's teeth during the lift what does that mean?

CarlosGP
 3 years ago
Best ResponseYou've already chosen the best response.0The forced exerted was exactly F=mg=281.5 x 9.81 Newtons

rajathsbhat
 3 years ago
Best ResponseYou've already chosen the best response.1It means that a downward force equal to the weight he lifted will be exerted on his teeth (the contact point).

rajathsbhat
 3 years ago
Best ResponseYou've already chosen the best response.1Btw, @CarlosGP, I saw a man on TV lift a 1000kgs (a ton) with his teeth. Jus sayin.

CarlosGP
 3 years ago
Best ResponseYou've already chosen the best response.0I saw another one make the Statue of Liberty disappear! ;) Can you believe it?

rajathsbhat
 3 years ago
Best ResponseYou've already chosen the best response.1but this was for real. It was on 'Superhuman' on the DISCOVERY CHANNEL!

CarlosGP
 3 years ago
Best ResponseYou've already chosen the best response.0I have to see under which conditions was the test carried out. I am not too sure neck muscles can stand that force

rajathsbhat
 3 years ago
Best ResponseYou've already chosen the best response.1I'll try to find a video..

CarlosGP
 3 years ago
Best ResponseYou've already chosen the best response.0@rajathsbhat, I would appreciate it! Thanks!

lgbasallote
 3 years ago
Best ResponseYou've already chosen the best response.1so for (b) it's just gravitational force?

rajathsbhat
 3 years ago
Best ResponseYou've already chosen the best response.1yes. Sorry, I was busy searching for that vid.

rajathsbhat
 3 years ago
Best ResponseYou've already chosen the best response.1and yes, it is the gravitational force.
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