PHYS 1010Q Lecture 10: Circular Motion & Gravity
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PHYS 1010Q Full Course Notes
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Covers materials in the first four modules. You have an assigned seats for the exam. Formula sheet with be attached to the exam booklet. Look for problems from class notes, quizzes, homework. Some will simply be copied, others will be similar to those. A figure below shows a ball hanging from the ceiling. The two forces on the ball are the weight force of the earth pulling downward on the ball and the tension force of the string pulling upward on the ball. The two forces are equal and opposite because . A) they are action-reaction pairs and newton"s third law is applicable. B) the acceleration of the ball is zero, newton"s second law says the sum of the two forces on the ball are zero. Hence the two forces must be equal and opposite. F (1 on 2) = -f(2 on 1)
