How to find maximum angular speed of torsion pendulum.

In a system, when potential energy decreases, then entropy also decreases. true false

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.

What happens when you slowly pulled the carboard?