Name: Write your answers (with 3 significant figures) in the blanks provided. 3.

Question

Name: Write your answers (with 3 significant figures) in the blanks provided. 3. Fill out the table in the buoyancy experiment based the shown values. In the parentheses indicate the missing units Zinc cylinder | Experimental | Theoretical buoyancy Buoyancy buoyancy | Height (cm) | Radius (cm) | % error for Weight in air Apparent weight in water (N) 0.150 0.100 5.00 1.8 Wooden cylinder Weight of |Apparent |Height ofthe Radius of the Experimental |Theoretical |%error for just the weight in wooden wooden buoyancy Buoyancy wooden water of Zinc cylinder (cm) cylinder (cm)) cylinder in air and Wooden buoyancy cylinders tied together (N) 0.060 5.00 1.7 0.010

Explanation / Answer

W' ( apparent weight) = real weight - Buoyant force

B = W - W'

Experiental = 0.15 - 0.10= 0.05 N

Theortical = 1000 ( 9.8) (V) where V is the volume= pir^2 h = 5.1 x 10^-5 m^3

Theortical = ( 1000) (9.8) (5.1 x 10^-5) =0.498 N

error = ( 0.498- 0.05)/ 0.498 x 100=90.% apprx

b) Apparent weight is negative when density of solid is less than density of fluid

Apparent weight of wood = -0.04 N

Experimental B =0.01 - (-0.04) =0.05 N

Theoretical B= 0.444 N

= % ereor = (0.444- 0.05)/ 0.444 x 100=88.7 % apprx

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