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/sci/ - Science & Math

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3866493 No.3866493 [Reply] [Original]

yeah this has me very confused.

the question is "what is the magnitude of the acceleration of each block?" for m1 isn't it

a = (m1*gsin(a) - m2g) / m1

and for m2 isn't it

a = (-m1*gsin(a) + m2g) / m2

but this isn't right. please help /sci/!

>> No.3866504
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3866504

bump

>> No.3866535

since they're connected, they're going to have to have the same acceleration

treat them together as one mass

>> No.3866537

>>3866493
So, they accelerate at a different rate?
While being connected with an (I assume) ideal cord?
Think again.

>> No.3866556
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3866556

This is the formula you would want OP

a= (m2gsintheta - m1g )/ (m2 + m1)

You can easily plug and chug, however look at this and see why these relationships would describe the net acceleration.

>> No.3866566

Goddamnit, can /sci/ not have homework threads ANY time of the year?

Seriously, I did this shit in high school.

>> No.3866578
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3866578

>>3866556

Me again, looked at your diagram and the masses lables are switched which will change it

a= (m1gsintheta - m2g )/ (m2 + m1)

f=ma
f/m=a

f=net force
m=mass

You should beable to understand why this works now OP unless you have downs.

>> No.3866580

>>3866556
This isn't the right one, since you're mixing up the m1 and m2.

>>3866537
>>3866535

Thanks, these were both really helpful hints. I got the right answer.

>>3866566
you're a faggot