Page 95 - eEISBN FINALIZE
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Example 3
o
A car was pulled along the horizontal using iron chains. If the chain is inclined 30 to the horizon
and the tension 150 N, what is the work done in pulling the vehicle as far as 100 m.
Solution:
=
=
= 150 30 100
= .
6.3 Energy
It is the capability of a body to do work. Joule (J) : unit
Form of energy :
Potential energy .
Kinetic energy.
Strain energy.
Thermal energy.
Chemistry energy.
Electric energy .
atom / nuclear energy
Solar energy and so on
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