Physics
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OpenStudy (anonymous):
f=6i-8j+10k
a=1m/s2
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OpenStudy (anonymous):
find mass of the body.
OpenStudy (anonymous):
f=ma f and a are vectors
u can write
\[f=ma \ \ \ then \ \ \ \left| f \right|=m \left| a \right|\]
OpenStudy (anonymous):
maye |f|*m=a
OpenStudy (anonymous):
after that
OpenStudy (anonymous):
well first get magnitude of f and you know a is 1
so 1*m=|f|
solve for m
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OpenStudy (anonymous):
i hav done that i m asking that after that
OpenStudy (anonymous):
becoz we can't gt mass in i,j,k,
OpenStudy (anonymous):
square all the i k j values add them up then square root it
OpenStudy (anonymous):
hw to split that one
OpenStudy (anonymous):
that will be the magnitude of your force
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OpenStudy (anonymous):
when you see a vector inside || it means magnitude like you se |f|
OpenStudy (anonymous):
m=6i-8j+10k/1
am i right
OpenStudy (anonymous):
you have to find the magnitude of the force before you can divide it
OpenStudy (anonymous):
f=6i-8j+10k\[|f|=\sqrt{(6)^2+(-8)^2+(10)^2}\]
OpenStudy (anonymous):
@timo86m is that how you find the magnitude...just making sure
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OpenStudy (anonymous):
Yes that is right Romero :)
OpenStudy (anonymous):
m is a Scalar not a vector
so
\[m=\frac{\left| f \right|}{\left| a \right|}=\frac{\left| f \right|}{1}=\left| f \right|=10\sqrt{2}\]
OpenStudy (anonymous):
ok tnx
OpenStudy (anonymous):
1gm cm/s=x newton second.find x
OpenStudy (anonymous):
i hav asked another 1
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OpenStudy (anonymous):
ruchi draw it instead
OpenStudy (anonymous):
it looks more like momentum than a force to me.
OpenStudy (anonymous):
|dw:1341755473496:dw|