Find the angle Sum of all forces acting on the block I'd the force then simple manipulation to get a
Kayden Allen
multiply 1200kg by gravity
Jayden Reyes
I'm dumber than bricks so can you show how to get theta user
Kinda did that already. Fg ends up to be 1200 kg * 9.8 m/s^2
Jackson James
Honestly I think you've got the answer with 9.8m/s^2 * sin(theta), but I'm definitely no expert.
Mason Gonzalez
dubs check'd. I feel like I got the answer already too, but I need to be 100% sure
Evan Jones
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Juan Myers
The 1200kg doesn't matter, you need to find acceleration, not net force. You can't find theta unless it is provided to you, or the question is asking you to find the angle of the ramp given x amount of acceleration. You shouldn't have to find a numerical value.
Xavier Murphy
Shouldn't it be 9.8/tan(theta)? Given you want the acceleration on the hypotenuse due to the projection of g on the slope. If tan() = opposite/hypotenuse then dividing by tan (theta) and multiplying by the acceleration on the opposite (gravity) you are left with the acceleration on the hypotenuse
Charles Ross
>tan = opp/hyp wat
Jose Gomez
Someone really needs to invent an app that uses the camera to scan math problems and solves them with wolfram alpha or some shit.
Alexander Moore
Makes sense. I guess a= 9.8 * sin theta might be the answer then.
i would usually let the thread die but imma post moar memes
wai wai wai one by one fagits. lemme show you a similar solution I got from jewtube
Tyler Hill
Remember the SOHCAHTOA
Christopher Perez
Shit you're right then it's divide by sin(theta) drinking and math dont mix for me
Jaxson Moore
Dividing by sin(theta) would result in an acceleration larger than gravitational acceleration. You want to multiply here.
Dayuuuum fagits getting dubs left and right. But we're finding acceleration tho. Why solve for the Hyp?
Jonathan Hernandez
it's just mass*acceleration * sin of whatever the angle is.
Samuel Ward
>a = g * sin θ
You can tell Sup Forums is full of retarded underage fgts these days because they need shit like this solved.
Oliver Rodriguez
dont divide. Break the downward force (g*m) into the parallel and perpendicular components
m*g*sin(theta) in the parallel direction
m*g*cos(theta) in the perpendicular direction
Nornal force due to newton's opposite and equal reaction law cancels out the latter force (so the block stays on the plane).
We're just left with the m*g*sin(theta) running parallel to the plane.
Mason Harris
This is incorrect, think about what the values actually represent in terms of this problem.
If there is no ramp, the block is either falling vertically, or already resting on level ground.
Vertical would be theta=90°, sin of which is one. 1*9.8m/s^2= 9.8m/s^2. As the angle becomes more acute, sin(theta) becomes smaller and smaller, becoming 0 at theta=0°.
The steeper the ramp, the faster the block will accelerate, and the shallower the ramp, the slower it will accelerate. Since gravity is the force acting on the block, and your force vector points straight down, you need the trigonometric function related to that force vector, i.e. sin.
Ryan Nelson
>mass*acceleration * sin of whatever the angle is
The text isn't asking for the force, dingus.
Jonathan Collins
And this is why I never pursued a career in physics... I was following for a bit but they totally lost me...
Owen Barnes
Should I drop down on my knees and suck you off then daddy? Will you show me the solution by then?
Wait so you have to use 90 degrees somehow?
Connor White
Tbh, you sound like you know your shit though.
Lucas Clark
i can't let this thread die on me goddamit.
Jaxson Butler
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Cooper Watson
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Oliver Walker
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Robert Miller
I know you're probably tired and sick of doing physics hw, but stay with me.
It's not that you need to use 90 degrees, it's just another way to visualize the problem.
Imagine the ramp being used in this image is some shallow angle, like 15 degrees. Think about how fast a block sitting on some logs would roll down that if you let it go at the top of the ramp, from a standstill.
Now imagine it again at 45 degrees. I mean it, visualize the ramp and the block. How much faster does it roll down the ramp?
Now imagine the ramp keeps getting steeper and steeper, such that it is no longer a ramp, but a vertical wall (aka 90 degrees). The block doesn't roll down the ramp anymore; it is in freefall.
What happens when you take the sin of those 3 angles and multiply them by g? The shallower the angle, the smaller the acceleration value, right? This should make sense, if you think about how fast the block should be rolling down those angles.
Jaxson Martinez
Then divide the force you get by the objects mass in newtons and you'll have acceleration. Boom problem solved.
Integrate acceleration and youll have velocity.
Regardless this shit cant be solved because the angle is unknown. rape my purple fag ass
Austin Russell
dubs check'd. thanks user. Ill let this gay ass thread die now
Kevin Edwards
Good luck user, and don't get discouraged! Remember to visualize the problems you get stuck on, and apply the things you already know about the world to work your way through them.
Joshua Lee
>Integrate acceleration and youll have velocity.
Nonsense. Determine the difference in potential energy between the two positions and determine the velocity via the kinetic energy, noob.