Page 1 - SP015 Past Years PSPM Chapter 1 -5 Ver.2020

PSPM SP015

PSPM CHAPTER 1: PHYSICAL QUANTITIES AND MEASUREMENT
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UPS 2010/2011 SF015 No. 1(a)

1. Copy and complete TABLE 1.1 with correct answers.

TABLE 1.1

Quantity SI Unit

Length

Temperature

Velocity

Force

[4 m]

UPS 2006/2007 SF015 No. 1(a)

2. The orbital radius, r of a satellite revolving around the earth is given by

2
 T

r 3  GM  

 2  

-2
-11
2
where G = 6.67  10 N m kg , T is the period and M is the mass of the earth.
Determine the homogeneity of this equation. [5 m]

UPS 2009/2010 SF015 No. 1(b)

3. A triangle has sides a, b, and c. A circle with radius r can be drawn inside the triangle.

(a) If r is given by

s (  a)( s  b)( s  c) (a  b  ) c
r  where s 
s 2

Determine the homogeneity of the expression r. [5 m]

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(b) If r is multiplied by , will its homogeneity change? Explain your answer. [2 m]
2

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