Answer
While running on treadmill, energy is transferred to the treadmill in form of work
i.e. W = normal frictional force due to body weight of runner* distance moved by treadmill.
This energy increases the temperature of treadmill hence it gets warm.
Work Step by Step
While running on treadmill, energy is transferred to the treadmill in form of work
i.e. W = normal frictional force due to body weight of runner* distance moved by treadmill.
This energy increases the temperature of treadmill hence it gets warm.