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marianjade30
marianjade30 marianjade30
  • 25-06-2014
  • Physics
Answered

A 1.0 kg book is lifted 0.5 m above the table , but the table is 1.0 m above the floor , what would be the P.E of the book if the reference level where the floor ?

Verified Answer :

sairah
sairah sairah
  • 25-06-2014

The height of the book from the ground = 1.0 m + 0.5 m = 1.5 m 

The mass of the book = 1 kg

We know that = 

\(P.E.=m*g*h\)

Taking 'g' as 9.8 m/s² and putting the values in the formula we get -

\(P.E.=1*9.8*1.5\)

\(P.E.=14.7\) \(Joules\)

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