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Physics 9 Online
OpenStudy (girlstudy):

A 2.0 kg mass falls 400 cm. how much work was done on it by gravitational force? how much PEg did it lose?

OpenStudy (shamim):

formula is w=mgh

OpenStudy (shamim):

w=work done

OpenStudy (girlstudy):

Does that answer both questions?

OpenStudy (shamim):

m=mass

OpenStudy (shamim):

w=potential energy loss

OpenStudy (shamim):

actually u hv to understand the solution of ur problem

OpenStudy (shamim):

can u tell me work done w=?

OpenStudy (girlstudy):

The formula ?

OpenStudy (girlstudy):

Oh, w = Joules?

OpenStudy (shamim):

w=mgh w=work g=gravitational acceleration h=height

OpenStudy (shamim):

yrs the unit of work is joule

OpenStudy (girlstudy):

what is PEg?

OpenStudy (shamim):

PE=potential energy

OpenStudy (girlstudy):

is there a seperate formula for that to calculate its loss?

OpenStudy (shamim):

no

OpenStudy (shamim):

wotk done=potential energy loss

OpenStudy (girlstudy):

oooh ok so w=mgh satisfies both questions

OpenStudy (shamim):

yes

OpenStudy (girlstudy):

oh kk thank you!

OpenStudy (shamim):

I can make this problem clearer when I will ude my laptop

OpenStudy (shamim):

I can draw frm my laptop

OpenStudy (shamim):

if an object of mass m. can u tell me the weight of that object?

OpenStudy (shamim):

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