Moving your shoulders back and down keeps the weight of the load supported by your legs.
His weight did move, slid a little down her body toward the stern of the boat.
People's weight can move down and back up like a yo-yo when they follow several diets one after another.
The weight moves only 1/3 as fast as the force arm.
When working the shoulder with free weights as in a lateral raise, the weight is far from the joint moving it, which can create instability.
The weight moved can also be adjusted to be more or less than the weight of the person doing the exercise.
The cold weight of the water moves in his stomach.
But the weight on her back did not move.
He shifted his weight and his face moved farther into the shadows.
In either case, it's the same phenomenon - spinning causes the weights to move outward.