WORK & POWER Flashcards by Mabel Altomea

Q

what is the formula of work

A

work = force x displacement

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Q

unit of work in MKS

A

joules = Newton = meter

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Q

unit of work in CGS

A

ergs = 10^ - 7 joules

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Q

unit of work in english

A

foot - pound

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Q

force must be?

A

must be in the same direction as the displacement

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Q

if the force is perpendicular to the displacement

A

work = 0

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Q

if displacement is 0

A

work = 0

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Q

formula of power

A

power = work/time
power = force x velocity

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Q

unit of power

A

watts (W) = joule/sec

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Q

1 horsepower =

A

= 746 watts

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