Introduction The Purpose Of This Experiment Is To Use The Force Table To Experimentally Determine The Force Which Balanc 1 (81.15 KiB) Viewed 22 times
Introduction The Purpose Of This Experiment Is To Use The Force Table To Experimentally Determine The Force Which Balanc 2 (61.52 KiB) Viewed 22 times
Introduction The purpose of this experiment is to use the force table to experimentally determine the force which balances two other forces acting on the same object (knot). The result is checked by adding the two forces using the component method of adding the vectors. The Equilibrium force balances the Resultant force. The figure below shows the forces. -E = R R R = A + B is In this experiment the resultant force R is found by adding the two vector forces A and B using their component. Two forces are applied by hanging masses over pulleys positioned at certain angles. Then the angles and masses hung over a third pulley is adjusted until it balances the other two forces, and this third force is called the Equilibrant force, E, since it is the force which establishes equilibrium. The equilibrant force vector is not the same as the resultant force vector, E O R. The resultant force is the addition of the two forces. While the equilibrant force is equal in magnitude to the resultant force but in the opposite direction, F1 = |R| because it balances the resultant. Therefore, equilibrant force vector is the negative of the resultant force vector._-] = R.
Questions 1. What are the mathematical expressions for the x and y components of the vector forces A, B and R? 3. Have you satisfied the relation. -E = Ř ? Explain and justify your answer. 4. Setup the force table with a forces 4 that has a magnitude of 7.25 N at an angle of 45° and B that has a magnitude of 6.55N at an angle of 150° (recall E = mg; use g= 9.8 m/s). a. What mass do you need to attach to the string to get a force of 2.5 N and 4.8N? Mass: kg, b. Find the components of the two forces Ar-component: Ay- component: ZZ N N B-component: B-component: ZZ N N c. Also find the resultant force FR
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