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Archimedes Principle Formulas Density = ma mass/volum olumee
Weight = mas masss*gravity
Weight of of a fl fluid = de densi nsity*volu olume*gr *gravity
Useful Values Density of water = !" #g/$ Start on the %ntro screen on the &uoyancy Sim on the 'h() ' h() Sims site! 1) What is rchimedes 'rinci+le, The buoyant force is equal to the weight of the fluid displaced. 2) What is the mass of each -loc#, 5.0 kg 3) .ow much does each -loc# weigh, Use the formula and 0!1 m/s2 for g and show your wor# -elow! )hen chec# the weight on the scale3! 5.0 kg * 9. m!s" # $9.0 % 4) 4lic# -o5 to 6Show Forces7 for 68ravity7 and 64ontact Forces7 and clic# -o5 to 69eadout7 for 6Force Values7! Values7! What are the values for and direction of each force for each -loc#,
Wood &loc#: 8ravity: $9.0 % down 4ontact Force:$9.0 % up
&ric#: $9.0 0 % down d own 4ontact Force:$9.0 % up 8ravity:$9.
5) What is the net force on each -loc#, 0.0 % 6) )hey are in a state of equilibrium. 7) What is the volume of water in the +ool, &00.00 '
water! What volume of water does the wood dis+lace, 5.0 ' 8) 'lace the wood -loc# in the water! 9) What is the weight of the water dis+laced, Use the formula for the weight of a fluid a-ove # &.0 kg!' * 5.0 ' * 9. m!s " # $9.0 % show your wor# -elow3 ( f #
for 6&uoyant Force7! What is the value of the -uoyant 10) 4lic# on the -o5 to 6Show Forces7 for force, $9.0 % 11) 4om+are the weight of the fluid dis+laced and the -uoyant force! They are the same. 12) What is rchimedes 'rinci+le, The buoyant force is equal to the weight of the fluid displaced. 13) .ow much does the -ric# weigh, $9.0 %
14) 'lace the -ric# in the +ool and let let it sin#! What volume of water does it dis+lace, ".5 '
15) What is the weight of this water, Use the formula and show your wor# -elow3 ( f # # &.0 kg!' * ".5 ' * 9. m!s " # "$.5 % 16) What is the value of the -uoyant force on the -ric#, $oo# at the readout ne5t to the -ric#!3 "$.5 %
17) What is rchimedes 'rinci+le, The buoyant force is equal to the weight of the fluid displaced. 18) 4onsider the weight of the wood and the -uoyant force on the wood! Why doesn;t it sin#, sin#, The buoyant force is equal to the weight of the wood block.
-ric#! Why does it sin#, 19) 4onsider the weight of the -ric# and the -uoyant force on the -ric#! The buoyant force is less than the weight of the brick. the density of the -ric#, of the wood, .int: Find the the volume of the wood -y holding 20) What is the it under water with the cursor3 )rick ensity+ ensity+ 5.0 kg ! ".5 ".5 ' # " kg!' kg!'
(ood (o od ensity+ ensity+ 5.0 kg ! &".5 ' # 0.$0 kg!'
21) What does density have to do with -uoyant force, The less dense an ob,ect is- the more fluid it will displace per unit mass. r in other words- an ob,ect will float if its density is less than the fluid it is in.
water and leave the wood in! 'redict how much more water will -e 22) 9emove the -ric# from the water dis+laced when the -ric# is +laced on the wood! 'rediction:/ariable answers but hopefully 5.0 '1
23) 'lace the -ric# on the wood and record how much more water is dis+laced! 5.0 '
24) Why must this much water -e dis+laced in order for the system to float, )ecause that2s that2s the 3olume of water that weighs $9.0 %+ the weight of the brick4 25) What is rchimedes 'rinci+le, 8ot it yet,>3
The buoyant force is equal to the weight of the uid displaced.
