Calculating Tension - Sharp EL-9900 Handbook Vol. 2 Operation Manual

Calculating Tension

Use the law of sines to find the tension when a pole of weight W is suspended with
two strings, and the strings are balanced with the angles from the vertical line A and B.
Calculation
T S
= =
sin B sin A sin (A+B)
sin B
T = W
sin (A+B)
sin A
S = W
sin (A+B)
T, S : tension W : weight
A, B : angles (6 sexagesimal numbers)
FLOWCHART
Start
Entry
Calculation of denominator
Calculation of tensions
Display of tensions
Name of parameter
A
B
C
2
W
B
S
A
T
Enter angles and weight
A, B and W.
Denominator in law of sines
calculated. C= sin (A + B)
Tensions T and S calculated.
T = W sin B/C
T = W sin A/C
Tensions T and S displayed.
PARAMETERS
Content
angle A
angle B
sin(A+B)
EL-9900 Graphing Calculator
vertical line
A
T
W
PROGRAMME LIST
Title : TENSION
Print "Input ANGLE
Input A
Input B
Print "Input WEIGHT
Input W
sin (A+B) C
W sin B/C T
W sin A/C S
Print "TENSION
Print "T=
Print T
Print "S=
Print S
End
Name of parameter
S tension S
T tension T
W weight
B
S
G
W
(REAL MODE)
Content