Volume, Density, Specific Weight, and Specific Gravity of an Object
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lab_1_units.pdf
ENGR 103 Lab 1: Units Fall 2015
Page 1
ENGR 103-_______ Date: September 11, 1015
Group Members: _________________________________________________________
Volume, Density, Specific Weight, and Specific Gravity of an Object
Show ALL work for full credit.
1. Using the ruler, measure and record the appropriate dimensions of the object in both inches and centimeters.
Convert measured inches to cm and comment on the difference, if any between the measured and converted values. Object used: __________________________________
in
cm
Convert in to cm
Work:
ENGR 103 Lab 1: Units Fall 2015
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2. What assumptions did you make about the shape of your object?
3. Using the scale, measure and record the object’s weight in lbf and N and mass in grams. Assuming standard acceleration of gravity, calculate the mass in lbm, and convert the mass in grams to kg. Convert lbm to kg and lbf to N and comment on the difference, if any between the measured and converted values.
Weight
lbf
N
g
lbm
kg
Convert lbf to N
convert lbm to kg
Work:
ENGR 103 Lab 1: Units Fall 2015
Page 3
4. Calculate the volume of the object in in3 and cm3. Convert in3 to cm3 and comment on the difference, if any between the measured and converted values.
Volume
in3
cm3
convert in3 to cm3
Work:
ENGR 103 Lab 1: Units Fall 2015
Page 4
5. Calculate the object’s density in lbm/in3 and kg/cm3. Convert lbm/in3 to kg/cm3 and comment on the difference, if any between the measured and converted values.
Density
lbm/in3
kg/cm3
convert lbm/in3 to kg/cm3
Work:
ENGR 103 Lab 1: Units Fall 2015
Page 5
6. Calculate the object’s specific gravity using both density in lbm/in3 and kg/cm3. You will need to convert the density of water given in your notes. What are the units of specific gravity? Comment on the difference, if any between the two values of specific gravity.
Specific gravity
Calculated with USC units
Calculated with SI units
Work:
ENGR 103 Lab 1: Units Fall 2015
Page 6
7. Calculate the object’s specific weight in lbf/in3 and N/cm3. Convert lbf/in3 to N/cm3 and comment on the difference, if any between the measured and converted values.
Specific weight
lbf/in3
N/cm3
convert lbf/in3 to N/cm3
Work:
