PCS 211 Lecture Notes - Lecture 4: Mechanical Equilibrium, Dynamic Equilibrium, Contact Force
Document Summary
A force is a push or pull on an object. It has both a magnitude and a ________. A force is either a contact force or a long-range force. Contact forces result from physical contact between two objects. Long-range forces act between disconnected objects: yuan. Weight/gravity (cid:149) weight of a body is the force exerted by the earth on the body (cid:149) weight (gravity) acts on all objects, moving or not (cid:149) gravity always points. _________________ (cid:149) the weight of an object at the surface of the earth is given by. W = mg, where g = 9. 8 m/s2 (cid:149) m is the gravitational mass - the. Examples of force: yuan property of a body that makes possible for it to interact gravitationally with other bodies. A spring exerts a push when compressed and a pull when stretched. The minus sign is the mathematical indication of a restoring force: yuan.
