please help with questions 2,3,4,5 and the interpretation questions 1 and 2

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please help with questions 2,3,4,5 and the interpretation questions 1 and 2
Chapter 2
MINILAB
%3
2-2 Measuring Height Indirectly
Objective
During this investige tion you will
• use trigonometry to measure your height indirectly.
Equipment
sturdy string or fishing line (about 3 meters long)
protractor
meter stick
Procedure
1. Hold one end of he string on top of your head.
2. Have your partnor extend the string to the floor in front of you.
This string is the hypotenuse of a triangle in whích your body and
the floor make uj) the other two sides.
3. Measure the length of the string, I, the distance along the floor from
your feet to the place where the string touches, f, and the angle
between the string and the floor, 6, Record these values in the Data
and Calculations section.
4. Measure your height directly by standing against the wall.
5. Repeat Steps 1-4 to determine your partner's height.
Data and Calculations
Length of string (1) 3,4 meders
Distance along the floor () -2.8 meters.
Angle between floor and string (0) 28°
Height measured di rectly 1.6 meters
Calculate your height by each of the methods indicated below. Be sure
to indicate the equa Jon you use in each case. Use the margins for your
calculations.
2-7
Chapler 2
Charlon K. Merrill Publialing Compuny Copyright © 1066 by Ball & Howell Company.
Transcribed Image Text:Chapter 2 MINILAB %3 2-2 Measuring Height Indirectly Objective During this investige tion you will • use trigonometry to measure your height indirectly. Equipment sturdy string or fishing line (about 3 meters long) protractor meter stick Procedure 1. Hold one end of he string on top of your head. 2. Have your partnor extend the string to the floor in front of you. This string is the hypotenuse of a triangle in whích your body and the floor make uj) the other two sides. 3. Measure the length of the string, I, the distance along the floor from your feet to the place where the string touches, f, and the angle between the string and the floor, 6, Record these values in the Data and Calculations section. 4. Measure your height directly by standing against the wall. 5. Repeat Steps 1-4 to determine your partner's height. Data and Calculations Length of string (1) 3,4 meders Distance along the floor () -2.8 meters. Angle between floor and string (0) 28° Height measured di rectly 1.6 meters Calculate your height by each of the methods indicated below. Be sure to indicate the equa Jon you use in each case. Use the margins for your calculations. 2-7 Chapler 2 Charlon K. Merrill Publialing Compuny Copyright © 1066 by Ball & Howell Company.
1. Use the angle and the length of the string.
Sin28°
* h= 3.4 (sin 28°) = 1.6 meters
1
3.4
2. Une thu angle and the distance along the floor.
3. Una land f to compute e. Determine your height using the calculated
e and !
4. Use the Pythegorean theorem.
5. Using the height you obtained in Procedure Step 4 as the most ac-
ourate value, compute the percent error in your answers for 1-4
above.
Interpretation
1. What are some possible sources of error in the indirect method of
measu rement?
2. List some applications of the indirect method of measuring height.
Transcribed Image Text:1. Use the angle and the length of the string. Sin28° * h= 3.4 (sin 28°) = 1.6 meters 1 3.4 2. Une thu angle and the distance along the floor. 3. Una land f to compute e. Determine your height using the calculated e and ! 4. Use the Pythegorean theorem. 5. Using the height you obtained in Procedure Step 4 as the most ac- ourate value, compute the percent error in your answers for 1-4 above. Interpretation 1. What are some possible sources of error in the indirect method of measu rement? 2. List some applications of the indirect method of measuring height.
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