/sci/ - Science & Math

[Anonymous No.1892764]

some one help!!
Physics ?

A crate of mass 225kg is pushed horizontally with force 710N. if the coefficient of friction is 0.20 calculate the acceleration of the crate.

What is the "coefficent of friction" how would i set this problem up?

[Anonymous No.1892782]

Did you even try to read your textbook? Also, this is hardly physics anymore. This is all you need to know.

<span class="math"> \sum \vec{F} = m\vec{a}[/spoiler]

[Anonymous No.1892818]

Look in the index for coefficient of friction
Google coefficient of friction
Ask a liberal arts major about coefficient of friction
Derive coefficient of friction from a d20 dice roll

[Anonymous No.1892824]

coefficient of friction is just the factor you multiply your normal force by to get the force of the friction resisting the object's movement.

penis

[Anonymous No.1892835]

ily all

[Anonymous No.1892867]

any one know how i would figged out the force when the friction acted apon the object?

[Anonymous No.1892910]

225kg crate would generate a (225*9.81) 2207.25 N force
Since the crate is on flat ground the normal force is the same
therefore the force of friction is (2207.25*.2) 441.45 N opposite the direction of motion

back to fuma (force unbalanced = mass times acceleration)

710 - 441.45 = 225 * a

which results in an acceleration of 1.19355556 m/s^2

[Implying No.1892912]

>What is the "coefficent of friction"

Oh, that's easy! It's 0.20.

[Anonymous No.1893104]

>>1892910
thanks bro, like you dont know how much you helped me right now

[Anonymous No.1893134]

>>1893104
I do. He expressed the acceleration of a crate in molecular widths per second squared. I'd hoped he would be more accurate.