Two skaters, each with a mass of 80 kg, are skating on opposite sides around a circle of radius 11 m, connected by a massless string.  If each skater has an angular speed of 1.4 rad/s, what is the total angular momentum of the skaters about a vertical axis that goes through the center of the circle? This axis is perpendicular to the plane of the page. (in kg m/s)  13552  2464  4928  0  27104 If the skaters pull on the string to bring each other closer and the circle now has a radius of 8.2 m, what is their new angular speed? (in rad/s)  1.26  2.52  5.04  1652.68  5.50

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Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.