force F of 30 N is applied to a door. Find the torque if F is applied to the door: a) 0.80 m from the hinge with F perpendicular to the door. b) 0.60 m from the hinge with an angle of 30° between the door and F. c) 0.30 m from the hinge parallel to the door

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Center of Gravity of a system

The centre of gravity is a property that is based on the geometry of a rigid body or any particle. It is described as an equilibrium point or a hypothetical location where the total weight of the body is concentrated.