Laboratory Report
Raphael Luis Hizon, Camille Janine Icaro, Dennis Edward Lagman, Michelle Laynes
Department of Math and Physics
College of Science, University of Santo Tomas
Espana, Manila Philippines
Abstract
Equilibrium is when all the forces that act upon an object are balanced but not necessarily equal. The experiment consists of four activities. The Equilibrant Forces, First Condition of Equilibrium, Locating the Center of Gravity and Second Condition of the Equilibrium are topics of each activity.
I. Introduction
According to Borelli, the human body is a system of levers. These human levers are responsible for all our bodily movements like eating, talking, walking and a like. Equilibrant force is a force capable of balancing another force and producing equilibrium. As stated earlier, Equilibrium is when all the forces that act upon an object are balanced but not necessarily equal. It is also the condition where there is no change in state of motion of a body. There are two conditions of Equilibrium. The first condition states that the vector sum of all forces acting on a particle is zero while the second condition states that the sum of all torques is zero.
The objectives of the experiments are as follows: 1. To determine the equilibrant force using the force table and component method 2. To determine the unknown forces using the first condition and second condition for equilibrium 3. To locate the center of gravity of a composite body 4. To demonstrate rotational equilibrium
II. Theory
Torque – also known as the “Turning Force”, is a vector that measures the tendency of a force to rotate an object about some axis
When all the forces that act upon an object are balanced, then the object is said to be in a state of equilibrium.
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The summation of all forces is equal to zero if the object is in a state of equilibrium.
The
References: [1] Cutnell, J. D. & Johnson, K.W. (2013). Introduction to Physics, 4th ed., John Wiley & Sons. Singapore. [2] R. Serway, C. Vuille. Physics Fundamentals I. Cengage Learning Asia Pte. Ltd., 2012. [3] Principle of Physics 6th ed. Boundless Open Textbook. https://www.boundless.com/physics/static-equilibrium-elasticity-and-torque/ [4] The Physics Classroom. (1993-2013). Forces in Two Dimensions. http://www.physicsclassroom.com/Class/vectors/u3l3c.cfm