what is power?
power :- Rate of doing work is called power.
or The work done in per unit time is called power.
its IS unit is Watt and joule per second (J/s)
शक्ति :- कार्य करने की दर शक्ति कहलाती है या इकाई समय में किया गया कार्य शाक्ति कहलाती है इसकी IS इकाई जुल प्रीति सेकंड होती है
P = work / time = j/s
P = J/s
work = force x displacement
and
force = m x accelaretion (here m for mass in kg) and (accelartion = m/s^2(m for meter and s for second) )
then
work = m x accelaretion x displacement(in meter)
then unite of work is
work = kg m/s^2 x m
then
work = kg m^2/s^2
then unit of power
power = work/s
than
power = kg m^2 /s^2xs
then
power = kg m^2 / s^3
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