# measurement of radius of a steel ball

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• ### 3 Ways to Measure a Fitness Ball - wikiHow

05.12.2019· To measure a fitness ball, start by getting a flexible measuring tape that will fit all the way around the ball. Then, measure the circumference of the ball and divide this by 3.14 to calculate the diameter, making sure to convert to centimeters. Another way to measure a fitness ball is using your body and sitting on the ball …

• ### Weight & Diameter of Steel Balls - H.R.T. …

Bearing steel balls have many specifications, usually manufactured in accordance with inch dimensions. Accuracy of precision steel balls can be accurate to the thouh units of micrometers (μm). The weights of different specifications of steel balls is different. Following, the specification and weight of bearing balls are translated. Conversion Chart of Weight & Diameter of Steel Balls ...

• ### Volume of an n-ball - Wikipedia

Then the volume of an n-ball of radius R approaches zero as n tends to infinity. This can be shown using the two-dimension recursion formula. At each step, the new factor being multiplied into the volume is proportional to 1 / n, where the constant of proportionality 2πR 2 is independent of n. Eventually, n is so large that the new factor is less than 1. From then on, the volume of an n-ball ...

• ### Bal-tec - All Ball Gages Information Page

The precision Ball Plug Gage makes a radius gage of unparalleled accuracy. By applying a thin coat of oil-base Prussian Blue to the Ball Plug Gage, it becomes a very effective method for checking spherical and toroidal surfaces. When the blued ball gage is brought into contact with the test part, it will leave a telltale blue mark at the points of contact. These gages are also widely used to ...

• ### The correct way of measuring the hardness on …

Platform preparation for measuring the hardness of the ball Ø40mm. For compliance confirmation grinding balls with fourth group of hardness prepared one platform of flat surface by removing the metal of ball to a depth of 0.5 radius (Picture 3). Picture 3. Platform preparation for measuring the hardness of the grinding ball Ø40mm to a depth ...

• ### Measurement of Viscosity in a Vertical Falling …

The falling ball viscometer is well-suited for measuring the viscosity of a fluid, and the method has been stated in international standards. 4,5 In the international standards, the method differs from the principle described in Refs. 1–3. The standards describe an inclined-tube method in which the tube for the falling ball was inclined at 10° to the vertical. Moreover, six balls were used ...

• ### Volume n surface area of sphere Find the number …

23.04.2015· Volume of 1 steel ball bearing = 4/3*π*(0.7/2)^3 = 0.1796 cm^3 Volume of steel in 1 kg = 1000/7.8 = 128.21 cm^3 Number of steel ball bearings that can be made = 714 (nearest whole no.) 0 0 0. Login to reply the answers Post; lunchtime_browser. Lv 7. 5 years ago. 1 kg = 1000g. volume = mass / density. volume of steel = (1000 g / 7.85 g/cm³) = 127.39 cm³ . Volume (V) of a sphere of radius (R ...

• ### The diameter of a steel ball is measured to be 16…

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• ### A small steel ball of radius r falls into a viscous …

A small steel ball of radius r falls into a viscous liquid of coefficient of viscosity is (eta) u. after some time,the velocity of the body attains a constant value V T . terminal velocity depends upon weight of the ball, coefficient of friction and radius of the ball.by the method of dimension analysis determine the relation expressing terminal velocity.

• ### The mass and diameter of a steel ball were used …

You suppose that your ball weighs 4056 kg and its weight can be 4015 kg or 4096 and its diameter is 100 cm= 1m. Well the diameter can be 97 cm or 103 cm. for example if it was 103 cm, the volume, instead of #V= 1/6 pi xx d^3= 0,52 xx 1 m^3= 0.52 m^3 # it will be #V= 1/6 pi xx d^3= 0,52 xx 1.03^3 m^3= 0.57 m^3 #

• ### How can I find the mass of a steel ball given its …

27.06.2008· The radius of the steel ball is r = 2cm = 0.02m and its specific heat is c = 0.486kJ/kgK Analyzing the units of these given values, I thought simple unit analysis would work. For example, 1/c would give units of kgK/kJ. The volume of the ball is v = (4/3)pi(r)^3 which has units of m^3. I'm having a difficult time trying to relate these things and manipulate them to just get the mass of this ball.

• ### Dropping the Ball (Slowly) - University of ia

We can check this result by dropping small steel balls through glycerin. We choose glycerin because it has a very high viscosity, so the balls fall slowly enough for us to be able to time them. One problem is that the viscosity of glycerin is very temperature dependent, being 1.49 Pa.sec at 20 o C, and 0.95 Pa.sec at 25 o C. We measured the temperature of our glycerin to be 23 o C, so we ...

• ### Solved: A Stainless Steel Ball (radius Rsphere = …

Question: A Stainless Steel Ball (radius Rsphere = 0.3175 Cm, Density Psphere = 7.866 G/cm°) Falls Through A Viscous Fluid (density Pfluid - 1.2 G/cm) And Quickly Reaches Terminal Speed V. You Measure The Ball's Position As A Function Of Time To Find V. The Ball Is At Positions Y = 10 Cm At Time 2.329 And At Position Y = 5 Cm At Time 3.04.

• ### Solved: A Stainless Steel Ball (radius Sphere = …

Question: A Stainless Steel Ball (radius Sphere = 0.3175 Cm, Density ρsphere = 7.866 G/cm3) Falls Through A Viscous Fluid (density ρfluid = 1.2 G/cm3) And Quickly Reaches Terminal Speed V. You Measure The Ball's Position As A Function Of Time To Find V. The Ball Is At Positions Y = 10 Cm At Time 2.087 And At Position Y = 5 Cm At Time 3.11.

• ### Solved: A Steel Spherical Ball Of Radius 2mm …

A steel spherical ball of radius 2mm and mass of 2g is dropped to a container filled with motor engine oil. The velocity of the ball through the oil is measured as 2 m/s, find the viscosity of the engine oil. (density of oil is 0.88g/cm3) Give the answer in the unit of Pa.s

• ### How to find the mass of a steel sphere - Quora

You could just measure it on a scale. But assuming you don't want to do that, the mass of a sphere can be calculated with the following formula: [math]m = frac{4}{3} cdot pi cdot r^3 cdot rho[/math] where: * r is the radius of the sphere * [...

• ### schoolphysics ::Welcome::

Measurement of the viscosity of glycerol . The viscosity of a liquid can easily be measured in the laboratory with the apparatus shown in Figure 1. A one-litre measuring cylinder is filled with glycerol and two rubber bands are placed around it a known distance apart (say 20 cm). The diameter of a small steel ball bearing is measured with a micrometer and it is then released from just above ...

• ### Ball (mathematics) - Wikipedia

In Euclidean space. In Euclidean n-space, an (open) n-ball of radius r and center x is the set of all points of distance less than r from x.A closed n-ball of radius r is the set of all points of distance less than or equal to r away from x.. In Euclidean n-space, every ball is bounded by a hypersphere.The ball is a bounded interval when n = 1, is a disk bounded by a circle when n = 2, and is ...

• ### A student measured the diameter of a small steel …

A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. asked Dec 14, 2018 in Physics by kajalk (77.6k points) units and measurements; neet; 0 votes. 1 answer. In searle's experiment, diameter of wire was measured 0.05 cm by screw gauge of least count 0.001 cm. asked Apr 18, 2019 in Physics by Anandk (44.2k points) jee; jee mains; 0 votes. 1 answer ...

• ### Does one measure a disco ball by it's radius or …

The volume of a sphere is V = 4/3 Ï€ r3, where r is the radius of the sphere. So measure the diameter of the tennis ball, divide by 2 to get the radius, and then apply the formula above. You ...

• ### What is the formula of the density of a steel ball …

You can solve this in two steps. (1) Calculate the ball's volume. Use the formula for a sphere, and remember that the radius is 1/2 the diameter. Convert the result it either to cubic decimeters ...