A community for students.
Here's the question you clicked on:
 0 viewing
cheska_P
 one year ago
A heavy box is pulled across a wooden floor with a rope. The rope makes an angle of 60° with the floor. A force of 80 N is exerted on the rope. What is the component of the force parallel to the floor?
cheska_P
 one year ago
A heavy box is pulled across a wooden floor with a rope. The rope makes an angle of 60° with the floor. A force of 80 N is exerted on the rope. What is the component of the force parallel to the floor?

This Question is Closed

FibonacciChick666
 one year ago
Best ResponseYou've already chosen the best response.1Did you draw a picture yet?

FibonacciChick666
 one year ago
Best ResponseYou've already chosen the best response.1with a picture and some trig, this becomes really clear.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0In this case you need to use the cosine law to calculate the force acting horizontally.

FibonacciChick666
 one year ago
Best ResponseYou've already chosen the best response.1no law involved. You'll have a right triangle

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0For a problem like this it helps to separate the force acting to the horizontal or vertical. For a known angle to the horizontal use sine law to calculate the force acting up and cosine for the force acting to the horizontal

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0And yes trig law is invovled. This is not a right triangle.

FibonacciChick666
 one year ago
Best ResponseYou've already chosen the best response.1You have a right triangle...dw:1444021627335:dw

FibonacciChick666
 one year ago
Best ResponseYou've already chosen the best response.1well @cheska_P You have a picture now, so it should be pretty easy to get what I meant based off of my argument above

FibonacciChick666
 one year ago
Best ResponseYou've already chosen the best response.1lemme know if you have any questions :)

cheska_P
 one year ago
Best ResponseYou've already chosen the best response.1@FibonacciChick666 I did 80Ncos(60) and got 40N. So would that be answer for the force parallel to the floor?

FibonacciChick666
 one year ago
Best ResponseYou've already chosen the best response.1I didn't check the actual number, but assuming calculator was correct, It would indeed. Now for a mental reasoning. The bottom part of the triangle is parallel to the floor so, we need the trig function that gives us the adjacent. which is cosine so then we know our hype and an angle, so we get cos60=x/80>80cos60

FibonacciChick666
 one year ago
Best ResponseYou've already chosen the best response.1Nice work :) In these instances, always draw a picture. It helps immensely.
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.