How heavy is a 3 inch steel ball?

To determine the weight of a 3-inch steel ball, we need to follow these steps:
1. Calculate the volume of the ball
2. Determine the density of steel
3. Multiply the volume by the density

Let's go through this process:

1. Volume of a sphere: V = (4/3) * π * r³

   - Diameter is 3 inches, so radius (r) is 1.5 inches
   - V = (4/3) * π * (1.5 in)³
   - V ≈ 14.137 cubic inches

2. Density of steel:

   - Steel density can vary slightly depending on the specific alloy, but a common average is about 0.284 pounds per cubic inch

3. Weight calculation:

   - Weight = Volume * Density
   - Weight = 14.137 in³ * 0.284 lbs/in³
   - Weight ≈ 4.015 pounds

Therefore, a 3-inch steel ball would weigh approximately 4 pounds (or about 1.82 kg).

Note: This is an approximate weight. The actual weight may vary slightly depending on the exact type of steel used and manufacturing tolerances. For precise measurements, it's always best to use a scale. Prev: How heavy is a 2 inch steel ball? Next: Choosing Forged Steel Balls for Optimal Grinding Performance