Object Weight (kg m/s 2 ) Weight of object and metal block (w a ) (kg m/s 2 ) We
ID: 1399713 • Letter: O
Question
Object
Weight
(kg m/s2)
Weight of object
and metal block
(wa) (kg m/s2)
Weight of object and
metal block with only
block submerged
(wb) (kg m/s2)
Weight with both
submerged
(wc) (kg m/s2)
Density of
Object
(kg/m3)
1
4.5/1000*9.8=
0.0441
70.5/1000*9.8=
0.6909
60.3/1000*9.8=
0.59094
0.5/1000*9.8
0.0049
2
5.5/1000*9.8=
0.0539
69.5/1000*9.8=
0.6811
61.5/1000*9.8=
0.6027
0.9/1000*9.8
0.00882
How do I calculate my density
Object
Weight
(kg m/s2)
Weight of object
and metal block
(wa) (kg m/s2)
Weight of object and
metal block with only
block submerged
(wb) (kg m/s2)
Weight with both
submerged
(wc) (kg m/s2)
Density of
Object
(kg/m3)
1
4.5/1000*9.8=
0.0441
70.5/1000*9.8=
0.6909
60.3/1000*9.8=
0.59094
0.5/1000*9.8
0.0049
2
5.5/1000*9.8=
0.0539
69.5/1000*9.8=
0.6811
61.5/1000*9.8=
0.6027
0.9/1000*9.8
0.00882
Explanation / Answer
Weight displaced = (Wa-Wc) - (Wb-Wc) = 0.0996/9.8 Kg = 0.0102 Kg
Volume of water displaced = 0.0102 m3
Volume displaced = volume of object = 0.0102 m3
Density = w/0.0102 *9.8 = 0.441 Kg/m3
b). similarly, density = 0.6875 Kg/m3
Please review the calculations, however method is correct
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