What are examples of pollution that can be caused by agriculture? A) mercury and cyanide tailings
B) animal waste and pesticide
C) salt and soil sediments
D) gasoline and oil seeping into groundwater

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.