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# Basic electrical..

Discuss Basic electrical.. in the Electrical Courses and Electrical NVQ's area at ElectriciansForums.net

J

#### jason1983

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Hi to all,

New to forum.

Can any give me a little help I hopefully be able to join my local college
for CG 2330 in september.

But for now I thought I would read my book by Trevor Linsley - basic Electrical installation work.
Iam on unit 2 chapter 4 page 88

i cant understand example 1

pwr=MassxAccelerationxDistancemoved
______________________________________ = W
Time taken

pwr=10x50kgx9.81m/s2x30m
__________________________________ = W
60s

pwr= 2452.5

but the Mass shows 10x50kg what is the 10?? come in from things I understand the 50kg

can anyone help with this if i have explained myself ?????

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E

#### elecyvie

gravitational constant should be 9.81 but generally rounded up to 10

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