A) where on a bicycle do you want to reduce friction to a minimum? how is it done?

b) where on a bicycle do you want friction?

multiply 2kg by latent heat of vap

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.