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PHYSICS
GRAPHICAL ANALYSIS SKILLS
enjoy learning physics ALINA IMAN ARIF
PLOTTING GRAPH
TITTLE OF THE GRAPH: symbol of the variable
GRAPH AXIS: symbol and unit (x-axis and y-axis)
y-axis : Responding variable
x-axis : Manipulated variable
SCALE: uniform scale example: 0, 2, 5, 10, 15 etc
SIZE: > 50% of graph paper
ALINA IMAN ARIF
relationship based on the GRAPH Graph pattern: straight line
Y
X
Y = mX
C = 0 m (gradient) = +ve
Relationship: Y is directly proportional to X
ALINA IMAN ARIF
Y
X
Y = mX + C
C = +ve m (gradient) = +ve
Relationship: Y is increase linearly to X
C
relationship based on the GRAPH Graph pattern: straight line
ALINA IMAN ARIF
Y
X
Y = mX - C
C = -ve m (gradient) = +ve
Relationship: Y is increase linearly to X
C
relationship based on the GRAPH Graph pattern: straight line
ALINA IMAN ARIF
Y
X
Y = -mX + C
C = +ve m (gradient) = -ve
Relationship: Y is decrease linearly to X
C
relationship based on the GRAPH Graph pattern: straight line
ALINA IMAN ARIF
Y
1/X
Y = m(1/X)
C = 0 m (gradient) = +ve
Relationship: Y is directly proportional to 1/X
relationship based on the GRAPH Graph pattern: straight line
ALINA IMAN ARIF
F/N
gradient of the graph
extension, x/cm
∆y
∆x
MUST show the substitution and unit (based on the graph given-refer to the variable)
ALINA IMAN ARIF
F/N
gradient of the graph
extension, x/cm
∆y
∆x
the idea to find the unit of the gradient
ALINA IMAN ARIF
F/N
precaution
extension, x/cm
Identify the variable F = force x = extension of the spring
ALINA IMAN ARIF
Identify the measuring instrument based on the variable given F = using SPRING BALANCE x = using METER RULE
F/N
precaution
extension, x/cm
ALINA IMAN ARIF
Eye must be perpendicular to the
reading of the (instrument) to avoid
parallax error.instrument : refer to the graph (y and x axis)