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4 posters

Physics Q

Ahmed: NH Admin; Number of posts : 51452
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Post n°1

Physics Q

by Ahmed Sun May 30, 2010 1:02 pm

Beth, a construction worker, attempts to pull
a stake out of the ground by pulling on a rope
that is attached to the stake. The rope makes
an angle of 51.1◦ with the horizontal.
If Beth exerts a force of 118.1 N on the
rope, what is the magnitude of the upward
component of the force acting on the stake?
Answer in units of N.

The Banker: NH Member; Number of posts : 15240
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Post n°2

Re: Physics Q

by The Banker Sun May 30, 2010 1:17 pm

i got 151.75N slanty

slanty

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Post n°3

Re: Physics Q

by Ahmed Sun May 30, 2010 1:19 pm

How? I want to check your work

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Post n°4

Re: Physics Q

by The Banker Sun May 30, 2010 1:21 pm

is it right? Razz

Razz

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Post n°5

Re: Physics Q

by Ahmed Sun May 30, 2010 1:23 pm

I dont know lol...show me your work

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Post n°6

Re: Physics Q

by The Banker Sun May 30, 2010 1:25 pm

118.1/sin(51.1)
=151.75

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Post n°7

Re: Physics Q

by Ahmed Sun May 30, 2010 1:27 pm

Why would you do that?? Surprised

Surprised

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Post n°8

Re: Physics Q

by The Banker Sun May 30, 2010 1:32 pm

Physics Q 87Wxq

sin "theta"= opp/hyp
u want the opp and u have the hyp (118.1) and theta (51.1)

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Post n°9

Re: Physics Q

by Ahmed Sun May 30, 2010 1:39 pm

Oh...I didn't look at it as a triangle...let's see...I pray that I dont lose points Razz

Razz

EDIT: Yup, Its wrong...and I lost point >.

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Post n°10

Re: Physics Q

by The Banker Sun May 30, 2010 1:41 pm

wait.. so is my answer right?

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Post n°11

Re: Physics Q

by Ahmed Sun May 30, 2010 1:41 pm

No...it's wrong.

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Post n°12

Re: Physics Q

by The Banker Sun May 30, 2010 1:42 pm

hmmm.. this is why i suck at physics Rolling Eyes

Rolling Eyes

so whats the answer then?

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Post n°13

Re: Physics Q

by Ahmed Sun May 30, 2010 1:43 pm

I don't know...I have to answer it Razz

Razz

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Post n°14

Re: Physics Q

by The Banker Sun May 30, 2010 1:45 pm

go on then.. and tell me the answer once u've worked it out.

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Post n°15

Re: Physics Q

by Ahmed Sun May 30, 2010 2:02 pm

Got it:

(sin51.1)(118.1)=91.91

Dark Flame99966

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Post n°16

Re: Physics Q

by Dark Flame99966 Sun Dec 05, 2010 6:19 pm

^
Actually, wavelength times frequency is supposed to equal the speed of light, but I don't see how that has anything to do with this

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Post n°17

Re: Physics Q

by preid1220 Sun Dec 05, 2010 7:01 pm

-Bot be gone-

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Re: Physics Q

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