Question

is anyone good with mechanical advantage?

Answer 1

if yes, then i have a problem answering 3 questions on the last page on this website; https://docs.google.com/viewer?a=v&q=cache:oYt47ka7l70J:www.cpo.com/ipcres/pdfs/unit2/Ch4RevQues.pdf+&hl=en&gl=us&pid=bl&srcid=ADGEESj1HjO67kwrGzPsa5R-7C2Hek9yvJv43kvFbNUxKKokbO7Ezx9EryxmavnTz1-4HE4cd-uku0Xeo1vlupXfMmV_QnMX7qa6WfQ3RtchP_GdpiCiZeTytwmyljDEDgLO9owWRzn7&sig=AHIEtbT-lhIJEy39FntuTTp0qi53RVVYIQ

Answer 2

#4, 5 & 6

Answer 3

I don't know how to calculate it

Answer 4

Well, I will give you a tip. You can use mechanical advantage = Force * distance.
keep in mind that the force is the module of the secant vector by the axis of rotation. And the distancia and given by space between the axis of rotation and the place where the force is applied

Answer 5

can you solve like one so I can have an example. cause it's easier for me to learn how to do it, when i see how it is done (:

Answer 6

Sorry, I'm from brazil, here we say arm strength, then I am note sure

Answer 7

hm, yep, i will try

Answer 8

okay, thanks

Answer 9

4,5 or 6 ?

Answer 10

5

Answer 11

ok i will try

Answer 12

Here are the problems for anyone following along at home:

Answer 13

5. biting (jaw) (I)

In fact the mechanical advantage is constant, so we will call k

k = 7 cm * 800 N = 5600 cmN

But the distance is 10 cm, so => 5600cmN = 10 cm * F out

Then F out = 560N


lifting (arm) (II)

Using the some concept

k = 5 cm * 800 N = 4000cmN

But d = 35 cm, so => 4000cmN = 35 cm * F out

Then F out ~ 114 N


So ! F out jam >>>> F out arma =)

OBS : The unit of torque is mN
but in this case i didnt converte the cm cause I'm lazy :P

Answer 14

omg thank you!!

Answer 15

welcome =)

Answer 16

thank you for the medalls hahahaha

Answer 17

np lol