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What is work , power and …

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What is work , power and energy

    • Posted by Sehaj Pannu 4 years, 11 months ago

    CBSE > Class 09 > Science
    • 1 answers

    Gaurav Seth 4 years, 11 months ago

    Work
    Definition Work is said to be done when a force applied to an object moves that object.
    Formula We can calculate work by multiplying the force by the movement of the object.

     

    W = F × d
    Unit The SI unit of work is the joule (J)

    Energy
    Definition In physics, we can define energy as the capacity to do work.
    Formula For the potential energy the formula is

     

    P.E. = mgh
    Unit The SI unit of energy is joules (J), which is named in honour of James Prescott Joule.

    Power
    Definition Power can be defined as the rate at which work is done i.e. energy converted.
    Formula The formula for power is

     

    P = W/t
    Unit The unit of power is watt (W).

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