A 1.2-kg mass is projected down a rough circular track (radius = 2.0 m) as shown.The speed of the mass at point A is 3.2 m/s,and at point B,it is 6.0 m/s.What is the change in mechanical energy done on the system between A and B by the force of friction? 
Definitions:
Monocline
A fold defined by local steepening in gently dipping layers.
Anticline
A type of fold in sedimentary strata that resembles an arch, with the oldest rocks at its core.
Thrust Fault
A thrust fault is a type of geological fault where the hanging wall moves up relative to the footwall, commonly found in areas of compression.
Monocline
A geological fold in sedimentary strata that results in a step-like form on the Earth's surface, indicating singular direction of dip.
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