In a playground, there is a small merry-go-round of radius 1.20 m and mass 210 kg. its radius of gyration is 91.0 cm. (radius of gyration k is defined by the expression i=mk2.) a child of mass 44.0 kg runs at a speed of 4.50 m/s along a path that is tangent to the rim of the initially stationary merry-go-round and then jumps on. neglect friction between the bearings and the shaft of the merry-go-round. calculate?

Atriangle with equal sides of length 10 cm has -2.5-nc charged objects at each corner. part a determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. determine the direction of the electrical force exerted on the object at the top corner due to the two objects at the horizontal base of the triangle. horizontally rightward vertically downward vertically upward horizontally leftward