Experiment 2Objective1. Obtain the resultant of a number of forces acting on a body. 2. Obtain the resultant of the same forces by drawing a vector diagram to scale to find its magnitude and direction.3. Determine of the resultant using the analytical method, including the law of cosine for the magnitude and the law of sine to find its direction in one instance. The components method will also be used.MATERIALS1. Force table5. Strings for suspending the masses2. Weight holders (#4).6. A ring3. Pulleys (#4).7. A metal pin 4. Slotted weights8. A protractor9. Sheets of plain paper and graph paper.Review Questions and Exercises1) What is the basic difference between scalars and vectors?2) Is temperature is a vector quantity? What do plus and minus temperaturesignify? Explain.3) A vector A has a magnitude of 60 m and directed as shown.Find the xand ycomponents of this vector. yx30A4) What are, briefly, the steps to find the resultant of vectors?5) What is the difference between a resultant & equilibrant vector & what do they physically mean?- 1 -

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Experiment 2THEORYA vector is a physical quantity that has both magnitude and direction. Examples include force, weight, displacement, velocity and acceleration. On the other hand, a scalar is a physical quantity that has magnitude only, examples speed, mass, distance, temperature, population. A vector may be represented by a letter example with a bar on top indicating the direction, or by a bold letter, example AA vector A can be written.