The system consists of a 20-lb disk a, 4-lb slender rod bc, and a 1-lb smooth collar c. if the disk rolls without slipping, determine the velocity of the collar at the instant the rod becomes horizontal. the system is released from rest when ! = 45°.

Plzz worth 22 ! which statement about energy transformations is not true? a all forms of energy can be transformed into thermal b energy is never destroyed or created during transformations c potential chemical energy always transforms into kinetic d some thermal energy is always released during a transformation

Where is the potential energy throughout the loading, cocking, and releasing of the trebuchet?

4. if you were an astronaut on the moon, what would you experience? what would you see from your perspective?