Question

PHY11/21 DATA for Steel(Iron) Ball Ruler data: D= _ cm Zero Reading of Micrometer (mm), Z Trial Mass M (gm) 8.4 8.4 60 LOAN Diameter D (mm) 12.595 12.590 12.592 12,587 12.681 12.685 12.674 12.684 12.685 12.685 12.646 8.4 8.4 7.4 10 Average , A 8,4 Zero Reading, A minus Z Calculating the density of the steel ball : 12.69 0 .65 D, M are the zero-corrected average values. 2 Radius of ball R - mm x 2 cm = 0.632...... cm Radius of bell Volume V - TR ------_ cm Density - M 8.4 ------- gm Standard Value of density for steel. Ps = 7.80 gm/cm Crn з % deviation = P P. x 100 = ---------- ( absolute value)

Answer 1

Radius of the ball = 0.632 cm =R volume of ball, V = 4 x R3 = 4x3.14 X 66.632) V= 1.05686 cm² Density, f = m - 8.4 = 7.95 g / m3 Standard value of density, P = 780 g/m3 %o deviation - S-ls x 100 m Den Is - 7.95-7.80 x 100 -11.92 % 7.80

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