Algodoo

How can the "motor efficiency" equal and exceed 100 percent by applying braking force?

Q: How can the "motor efficiency" equal and exceed 100 percent by applying braking force?
A: Ask Emil. The motor doesn't completely stop when braking torque is greater than motor torque. In real life the motor would stop and the motor efficiency would drop to zero.

Emil has a sense of humor.

please tell me how to create a torque (load) in text ??

Create box.
Connect box to background using (2) hinges.
Attach circle with hinge to box.
Move circle away from box creating a stretched axle.
Attach a second circle with hinge to the box.
Setup one hinge as a motor and the other as a brake.
Move the first circle directly over the second circle. You should end up with (2) circles connected to the box.
Connect both circles together.
If the brake torque is less than the motor torque then the circle will rotate.