1D40.30 Throw Dumbbell

A dumbbell with unequal masses is thrown without rotation when the force is applied at the center of mass and with rotation when the force is applied off the center of mass.

A 'dumbbell' consisting of a red billiard ball and a yellow tennis ball stuck on opposite ends of a metal rod sits on a dark pad on the floor. A tall white backdrop stretches across the background of the photo.

A tall man in black (Vacek) holds the 'dumbbells' by the center of the rod with his left hand, while steadying the billiard ball side with his right hand. His hands are extended to drop the dumbbell so that it will fall with the white backdrop for a background.

 

A tall man in black (Vacek) holds the 'dumbbell' by the rod at a point very near the red billiard ball side. His hand is extended, ready to drop the dumbbell.

Force applied at the center of mass.

Force applied off the center of mass.

 

Location: dumbbell B3-4