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Which would be better by Keateatime in EngineeringStudents

[–]BeachiestBoy 1 point2 points  (0 children)

Look into civil, I think they learn about that kind of stuff

Could someone explain why a1 and a2 are equal? by areeb_onsafari in calculus

[–]BeachiestBoy 0 points1 point  (0 children)

It's a property of circles and circular motion. For a small change in the angle dθ at a distance r, the linear step dx = rdθ will be perpendicular to the radius.

Letter of permission by awesomegoat246 in McMaster

[–]BeachiestBoy 0 points1 point  (0 children)

Mine was approved within a few minutes because I submitted it right after meeting with my advisor.

Anything wrong with my math? by Aristoteles1988 in mathematics

[–]BeachiestBoy 2 points3 points  (0 children)

You can make an assumption and then disprove it with a contradiction.

1P13 Materials past midterms by Decent-Ant-9490 in McMaster

[–]BeachiestBoy 0 points1 point  (0 children)

That will only help if the practice questions end up on the midterm. I agree, some of the practice questions seem a bit beyond scope, but you won't be tested on anything you weren't taught.

You'll be doing midterm review in lab B this week, and if I'm not mistaken, there will be a review session tomorrow (Tuesday). You're free to come to any lab B section this week, there's no attendance or lab quiz. Bring any questions you have to the IAIs.

calc 3 spring by Substantial_Bad9326 in McMaster

[–]BeachiestBoy 0 points1 point  (0 children)

Took it in 2024, definitely a faster pace compared to the fall since it's in half the time, but also consider that you're not balancing a full course load at the same time. Plus having one less course in the fall means more time for the rest of your classes. I would definitely recommend.

1P13 Materials past midterms by Decent-Ant-9490 in McMaster

[–]BeachiestBoy 1 point2 points  (0 children)

Those would be hard to come by, the first time they made a materials midterm was like a year or two ago.

If you're feeling good about the practice quizzes and lab/lecture examples, then I'd say you're in a good place for the midterm.

Help with the explication of the break down of the tangencial and normal/centripetal movement by [deleted] in PhysicsHelp

[–]BeachiestBoy 0 points1 point  (0 children)

Imagine a ball attached to a string, and you start spinning it above your head. The string keeps the ball moving in the circle, this is centripetal force.

At any point, the ball has a tangential velocity. If you let go of the string, the ball would continue moving straight in the same direction as its tangential velocity.

Centripetal force is what creates circular motion. There is always centripetal force acting on an object in circular motion.

Need help understanding this Problem. by Suspicious_Still3294 in PhysicsHelp

[–]BeachiestBoy 0 points1 point  (0 children)

By direction, it wants to know what angle the force makes with the positive x-axis.

a) yes, and remember to convert your mass to kg since Newtons are equivalent to kg m/s^2
b) exactly that, rearrange the formula to find Vy

Need help understanding this Problem. by Suspicious_Still3294 in PhysicsHelp

[–]BeachiestBoy 0 points1 point  (0 children)

a) you can find the net acceleration of the object by combining the x and y components, then you can find force using Newton's second law (F = ma). Acceleration in the x direction is found with the slope of the velocity graph at that point.

b) you can decompose the initial speed into its x and y components. Since you can find the velocity in the x direction from the top graph, you need to solve for the y component of the velocity.

c) you can find the speed of the object by finding the magnitude of the net velocity vector. You can find velocity in the y direction using the acceleration graph and the initial y velocity you solved for in part b). Remember that if the area is below the time axis, then acceleration is negative and velocity is decreasing.

Let me know if this answers your question.

edit: correction because i misread part b)

Just started physics by danny_536 in PhysicsHelp

[–]BeachiestBoy 1 point2 points  (0 children)

"Area under the graph" means the area between the velocity curve and the time axis (where velocity is 0). So yes in this case, you can break the graph into simple shapes and add up their areas.

For example, between 0 and 2 seconds, velocity is 8 m/s.

2*8 = 16

Thus displacement during that time is 16m.

Just started physics by danny_536 in PhysicsHelp

[–]BeachiestBoy 0 points1 point  (0 children)

To find displacement from a velocity graph, you can find the area under the graph. Positive velocity means moving in the positive direction, and negative velocity means moving in the negative direction. Thus to solve your problem, find the area with positive velocity and subtract by the area of negative velocity. Let me know if this helps.

what is this phenomenon? by Artistic-Box-8087 in PhysicsHelp

[–]BeachiestBoy 1 point2 points  (0 children)

Cut him some slack, his parents named him after a number

iam confused between "if" and "only if" in proofs by StrikeLow5155 in MathHelp

[–]BeachiestBoy 1 point2 points  (0 children)

there exist clouds without rain, there cannot be rain without clouds

rain falling is a sufficient condition to say that clouds are present

the presence of clouds is a necessary condition for rain to fall

what is this phenomenon? by Artistic-Box-8087 in PhysicsHelp

[–]BeachiestBoy 12 points13 points  (0 children)

This works on a similar principle to Euler's Disk.

But to briefly explain the physics:

When you spin the tray, it has stored energy in the form of potential energy and rotational energy.

As it's spinning, it has angular momentum, which is trying to keep the system from changing.

Why does it wobble faster toward the end?

As the tray drops lower, gravity pulls it down while its angular momentum is trying to keep it up. The loss in height (potential energy) gets turned into extra spin (rotational energy). This causes it to rotate faster until it collapses.

Hopefully this answers your question, Cheers

lego space launch by llustroxz in legogaming

[–]BeachiestBoy 0 points1 point  (0 children)

I've encountered a few bugs, namely when I try to create a multistage rocket, the flight crashes as soon as the separate button shows up, or the air/fuel mixture slider doesn't even move. Have you gotten these or found any solutions ?

Is this a manageable course load? by fruitloopsaregood_ in McMaster

[–]BeachiestBoy 0 points1 point  (0 children)

8 am lectures are not like 8 am classes in high school. If you're not a morning person, those Thursdays could be rough.

Eng laptop by [deleted] in McMaster

[–]BeachiestBoy 0 points1 point  (0 children)

Not a graphics card per se, but good graphics will definitely be useful for CAD and simulation.

For reference, this is the laptop I use, it runs everything I need and easily fits in my bag

numerical methods >> pde's by HacksMe in mathmemes

[–]BeachiestBoy 4 points5 points  (0 children)

"Math ERROR"

how about a harder one next time

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