PHYS 101 Lecture Notes - Lecture 9: Strong Interaction
17 Jun 2015
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Phys 101: physics for the life sciences lecture 9: dynamics. Fnet=m a: law of action and reaction: if object a exerts a force on object b then object b exerts an equal and opposite force on object a. (forces occur in pairs called action/reaction pairs). Gravity (w) - pulls toward the centre of the earth. Normal force (n) - force from the table: given that the the block is not accelerating find the magnitude of fnet. Because the forces w and n add up to zero this must mean that they are of equal magnitudes. Pull the crate in the x-direction by an amount of x and let go. How to solve force problems: read the question carefully, draw a picture if not provided. Isolate the objects you are interested in and for each object draw a diagram (free body diagram -
