PHYS 1003 Lecture 6: Lecture 6
6 Oct 2016
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Two types of force: contact force force exerted when by an object in contact with another (continuous, non-contact forces force exerted at a distance (gravity) Identify all forces on the object (both contact and non-contact forces) Draw vectors representing these force (if possible make it to scale) Caution: force of throw does not continue throughout the entire motion. Must have a total force of zero along the x and y axis for the net force to be zero: vectors not along the principle axes must be divided into x-axis and y-axis components. If the net force is zero, the object must be: at rest (coin supported by surface tension, in constant velocity. Contact force exerted on an object by a adjacent solid surface. Prevents an object from passing through another solid object. Weight of an object is the force due to gravity. Approximation: must be below 160m above sea level.
