Wihen osereon starts arevolving doorih motonhich af te folw et \"force couple?\"

Question

Wihen osereon starts arevolving doorih motonhich af te folw et "force couple?" a. the person's force applied to the door off-axis; the point of restraint at the axis of rotation c. d. e. the person's eccentric force; the door's centric force all of the above are force couples none of the above The biomechanical principle of Conservation of Angular Momentum implies a. b. c. d. Athletes engaged in angular motion want to keep moving as fast as possible An ice skater who is spinning wants to wait to the last second to disrupt the momentum of her spin Barring an external force, if moment of inertia increases, angular velocity decreases, and vice versa The radius of gyration must stay constant once an object becomes a projectile

Explanation / Answer

for revolving door force couple is

a. the persons force applied to the door off axis ; the point of restrain at the axis of rotation.

For conservation angular momentum.

c. Barring an external force , if moment of inertia increases angular velocity decreases and vice versa.

Since L = I w

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