Units


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haleyervin7
Posts: 61
Joined: Fri Sep 28, 2018 12:15 am

Units

Postby haleyervin7 » Wed Jan 30, 2019 8:57 pm

Hi, can someone please explain the units and how they cancel in the work equation?

Elaine Pham 2E
Posts: 58
Joined: Fri Sep 28, 2018 12:28 am
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Re: Units

Postby Elaine Pham 2E » Thu Jan 31, 2019 10:06 am

The unit for pressure is kg/(ms^2). The unit for volume is m^3. Since work = external pressure multiplied by change in volume, the units for work are (kg/(ms^2))m^3. When you simplify that, you get (kgm^2)/s^2 = Joules.


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