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 2 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?
 2 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
 2 years ago
Best ResponseYou've already chosen the best response.1im thinking \[\Delta U_{GRAV}?\]

lgbasallote
 2 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
 2 years ago
Best ResponseYou've already chosen the best response.10.171 is in metres already. I don't get your question.

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

lgbasallote
 2 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
 2 years ago
Best ResponseYou've already chosen the best response.1ah, yes, it is 0.171 that you need you need to use.

CarlosGP
 2 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
 2 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
 2 years ago
Best ResponseYou've already chosen the best response.0The forced exerted was exactly F=mg=281.5 x 9.81 Newtons

rajathsbhat
 2 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
 2 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
 2 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
 2 years ago
Best ResponseYou've already chosen the best response.1but this was for real. It was on 'Superhuman' on the DISCOVERY CHANNEL!

CarlosGP
 2 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
 2 years ago
Best ResponseYou've already chosen the best response.1I'll try to find a video..

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

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

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

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