Help with Using Vectors to Find Work Done by a Force

Question

Help with 	Using Vectors to Find Work Done by a Force

darkbluechocobo · Answer

A heavy crate is dragged 70 feet along a level floor. Find the work done if a force of 20 pounds at an angle of 32° is used. Round your answer to the nearest tenth.

darkbluechocobo · Answer

would you do 70*20cos32? @freckles

anonymous · Answer

um, isn't this math?

anonymous · Answer

oh, nvm :)

darkbluechocobo · Answer

@campbell_st

darkbluechocobo · Answer

@zepdrix does my equation look right?

zepdrix · Answer

Ooo physics 0_o hmm

zepdrix · Answer

|dw:1431116232603:dw|

zepdrix · Answer

Work = uhhh force times distance or something, ya?

zepdrix · Answer

$$\Large\rm \cos32=\frac{70}{hypotenuse}$$$$\Large\rm hypotenuse = \frac{1}{70}\cos32$$

zepdrix · Answer

So maybe it's $\Large\rm W=20\cdot \frac{1}{70}\cos32$

??

zepdrix · Answer

I dunno, physics stuff is harrrddd >.<

darkbluechocobo · Answer

This is precal :p

darkbluechocobo · Answer

Welp im learning it in precal

darkbluechocobo · Answer

Tis a vector unit so i guess that is why

zepdrix · Answer

heh :3

darkbluechocobo · Answer

example :

zepdrix · Answer

Oh oh oh my diagram was off then, lemme redraw that

zepdrix · Answer

|dw:1431116671191:dw|and it's being pulled in this direction like this

zepdrix · Answer

ummm

darkbluechocobo · Answer

yeh i was thinking because it sets up the same as that problem 70 feet is the distance. force is 20 pounds an the angle is 32

zepdrix · Answer

yah i think you set it up right >.<
maybe tag dan or someone to make sure.
physics stuff too hard for me lol