A steel ball with the density of 6229 kg/m and the radius of 0,65 cm was dropped into the oil whose viscosity was to be measured as is seen in the figure. When the ball attains a constant velocity, the distance that the ball travelled was measured as 99 cm within the time interval of 4,7 sec. Before the experiment, the mass of the 100 ml-oil was measured as 2,1 gr. According to the data given above, find; a) the density of the oil (in kg/m ). (Please do not use any decimal digit.) b) the speed of the steel ball after the ball attains a constant velocity (in m/s). (Please use 4 decimal digits.) c) the dynamic viscosity of the oil (in Pa.s) (Please use 3 decimal digits.) d) the flow Reynolds number. (Please use 4 decimal digits.)
A steel ball with the density of 6229 kg/m and the radius of 0,65 cm was dropped into the oil whose viscosity was to be measured as is
seen in the figure. When the ball attains a constant velocity, the distance that the ball travelled was measured as 99 cm within the time interval of 4,7 sec. Before the experiment, the mass of the 100 ml-oil was measured as 2,1 gr. According to the data given above, find;
a) the density of the oil (in kg/m ). (Please do not use any decimal digit.)
b) the speed of the steel ball after the ball attains a constant velocity (in m/s). (Please use 4 decimal digits.)
c) the dynamic viscosity of the oil (in Pa.s) (Please use 3 decimal digits.)
d) the flow Reynolds number. (Please use 4 decimal digits.)
Please solve this question step by step to reach correct answers.
correct answers:
a) 21
b) 0,2106
c) 2,715
d) 0,0212
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