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Lecture

# Unit IV Lecture(Side Notes).docx

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School
Department
Physics
Course
PCS 211
Professor
Jonathan Hu
Semester
Fall

Description
Unit IV Lecture(Side Notes) – PCS211 2 Mass is proportional to the Area of the Object. A =mass A force that acts along a line passing through the origin produces a zero torque(where most forces meet) ∑Fx = 0 , ∑Fy = 0 and ∑Torque = 0 Horizontal Beam Example: o The beam is uniform o So the center of gravity is at the geometric center of the beam o The system is at rest and the object is uniform, therefore categorize it as a rigid object in equilibrium. o The tension of the rope must withstand two object: person standing on it(W ) p and the beam itself(W ).b Always draw a force diagram There are 3 unknowns (T, R,α) o T Force exerted by the cable o F Force exerted by the wall at the Pivot The forces must be resolved into components.
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