TEST OF PRACTICAL KNOWLEDGE QUESTION Using the spring balance provided, determine the weight of object of mass M = 5.0g. Record this weight as W\(_{1}\). De...

TEST OF PRACTICAL KNOWLEDGE QUESTION

1. Using the spring balance provided, determine the weight of object of mass M = 5.0g. Record this weight as W\(_{1}\).
2. Determine the weight of the object when completely immersed in water contained in a beaker as shown in the diagram. Record the weight as W\(_{2}\)
3. Determine the weight of the object when it is completely immersed in the liquid labelled 'L'. Record the weight as W\(_{3}\). Evaluate, u = (W\(_{1}\) -W\(_{3}\)) and v = (W\(_{1}\) - W\(_{3}\)).
4. Repeat the procedure with the objects of masses M = 10, 15, 20, and 25g. In each case, evaluate u = (W\(_{1}\) - W\(_{3}\)) and v = (W\(_{1}\) - W\(_{3}\)) on the vertical axis against u = (W\(_{1}\) - W\(_{2}\) on the horizontal axis.
5. Determine the slope, s, of the graph. (vii) State two precautions taken to ensure accurate results.

(b)i. A piece of brass of mass 20.0g is hung on a spring balance from a rigid support and completely immersed in kerosine of density 8.0 x 10\(^{2}\)kg m\(^{-3}\). Determine the reading on the spring balance. [g= 10ms\(^{-2}\)], density of brass = 8.0 x 10\(^{3}\) kg m\(^{-3}\) J

ii. State Archimede's principle and the law of floatation.

Answer Details

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