Challenging Vector Problem: How Can Beetle 2 Reach the New Location of Beetle 1?

  • Thread starter Thread starter Cathartics
  • Start date Start date
  • Tags Tags
    Vector
AI Thread Summary
The discussion centers on a vector problem involving two beetles running on flat sand, with the goal of determining the necessary magnitude and direction of Beetle 2's second run to reach Beetle 1's final position. The calculations provided by the user for the vectors are incorrect due to a misunderstanding of the angle measurements; Beetle 2's angle should be measured from east rather than north. The user is encouraged to adjust their calculations accordingly, particularly for Vector C, to achieve the correct results. The importance of accurately interpreting the angles in vector problems is emphasized, as it directly affects the outcome. Clarifying these vector components will lead to the correct solution for Beetle 2's movement.
Cathartics
Messages
27
Reaction score
0
******Challenging Vector Problem******

Two beetles run across flat sand, starting at the same point. Beetle 1 runs 0.50 m due east, then 0.82 m at 26° north of due east. Beetle 2 also makes two runs and the first is 1.6 m at 43° east of due north.
(a) What must be the magnitude of its second run if it is to end up at the new location of beetle 1?
Answer in m

(b) In what direction must it run?
Answer in ° (counterclockwise from due east)

I have made numerous attempts to the problem here is one of my attempts

Vector A =.50 i + 0 j
Vector B = .82 cos26 i + .82 sin26 j = .7370 i + .3594 j
Vector C = 1.6 cos43 i + 1.6 sin43 j = 1.1701 i + 1.0911 j

I did A+B - C and that was R = .0669 i + (-.7317) j
|R| = .7347m and angle = 84.77

What am i doing wrong when i plug the answers online it says I'm wrong! Please please help me on this. Can you please provide the exact answer along with the meathod i want to see the whole thing done...
Thanks in advance.
 
Physics news on Phys.org
Note that "north of due east" is different from "east of due north".
Draw in the angle in both cases... then look at your components.
 
It's still unclear to me, despite my several attempts i am unable to solve it. Please help help help!
 
The angle given for beetle 2 is measured off of "north." Your calculations are set up as if the angle is measured off of "east."

Use the angle that beetle 2 makes with "east" instead of "north."
 
I think vector B is correct but Vector C is wrong.
 
Thread 'Voltmeter readings for this circuit with switches'
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
Thread 'Struggling to make relation between elastic force and height'
Hello guys this is what I tried so far. I used the UTS to calculate the force it needs when the rope tears. My idea was to make a relationship/ function that would give me the force depending on height. Yeah i couldnt find a way to solve it. I also thought about how I could use hooks law (how it was given to me in my script) with the thought of instead of having two part of a rope id have one singular rope from the middle to the top where I could find the difference in height. But the...
Back
Top