Question

If I work out rotational energy to be 102.2J which equals kg.M/s^2, and I hadn't factored time into it, would that be Joules per second? So Watts? What would I need to do to find how much energy at the same rate, for 30minutes?

Answer 1

0.057 joules is needed to create the total rotational energy each second.

Step-by-step explanation:

The energy rate is the ratio of total energy to time, which coincides with the definition of power at constant rate:

`\dot W = (\Delta E)/(\Delta t)`

`\dot W = (102.2\,J)/(\left(30\,min\right)\cdot \left(60\,(s)/(min) \right))`

`\dot W = 0.057\,(J)/(s)`

`\dot W = 0.057\,W`

0.057 joules is needed to create the total rotational energy each second.