A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
a worker uses a block and tackle with a mechanical advantage of 1.74 to lift a 225 N crate a distance of 16.5 m. He pulls 33.0 m of rope. What force did she use to lift the crate?
29.0 N , 129 N , 57.0 N , or 392 N
anonymous
 one year ago
a worker uses a block and tackle with a mechanical advantage of 1.74 to lift a 225 N crate a distance of 16.5 m. He pulls 33.0 m of rope. What force did she use to lift the crate? 29.0 N , 129 N , 57.0 N , or 392 N

This Question is Closed

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1please, wait a moment a student asked me for help in Mathematics

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1here we have to consider the work done by the weight force of the crate, which is: \[{W_1} = Fs = 225 \times 16.5 = ...\]

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1what do you get?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1ok! that's right!

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what happens next? to find the solution to the problem?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1next we have to consider the work W_2 done by the worker, which is: \[{W_2} = Rd\] Now we don't know what is R

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1whereas d=330 meters

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1oops..d=33 meters

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1in order to find the value of the requasted force R, we have to apply this condition: \[\Large 1.74 = \frac{{3712.5}}{{33R}}\] so what is R?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1sorry, it is the wrong result, please wait, I revise my reasoning

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1the requested force is given by the subsequent simple computation: \[1.74 = \frac{R}{F},\quad R = 1.74F = 1.74 \times 225 = ...Newtons\] here I have applied the definition, of advantage of a simple machine, namely: \[{\text{advantage}} = \frac{{{\text{resistive force}}}}{{{\text{agent force}}}}\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0391.5? so our solution is 392 N?

Michele_Laino
 one year ago
Best ResponseYou've already chosen the best response.1yes! that's right!
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.