The mechanical equivalent of heat

The net work done is equal to the change in kinetic energy,

Mechanical energy can be converted to heat and vice – versa.

If the mechanical work done (W) by an object produces the same temperature change as heat (H), then

Mechanical equivalent of heat (J)

= Amount of Work (W) / units of Heat (Q).

We know unit of work and heat is the same, hence it’s dimensionless.