An iron cylinder with a mass of 5 kg, 20 cm high, and a density of 7.8 × 10 ^ 3 kg / m2 Find (1) how much pressure does the table face when it is placed vertically on a horizontal table top? (2) how much pressure does the table face when it is pressed down with Newton's force?

An iron cylinder with a mass of 5 kg, 20 cm high, and a density of 7.8 × 10 ^ 3 kg / m2 Find (1) how much pressure does the table face when it is placed vertically on a horizontal table top? (2) how much pressure does the table face when it is pressed down with Newton's force?

(1) F1 = mg = 5 * 10 = 50N, ρ = m / V, s = V / h, P1 = f / s, P = 1.46 * 10 ^ 4 PA
(2)p2=(F1+F)/S

A flywheel is composed of a cylinder with a diameter of 30 cm, a thickness of 2 cm, and two cylinders with a diameter of 10 cm and a length of 8 cm

Volume: 3.14x (30 divided by 2) square x2 + 3.14x (10 divided by 2) square x8x2
The result divided by 1000000 times 7800 is a mass of 7800 kg per square meter

What is the density of the cylinder
How much is a 2000 aluminum bar with a diameter of 50?

17.5055

What is the diameter of known cylinder (iron) with density = 7.8, height = 60mm, weight = 6.8kg?

Approximately equal to 4.62 under the root sign

What is the weight of a cylinder with a diameter of 705mm and a height of 240mm?
There is also a cube, 210mm long, 230mm wide and 130mm high. What is the weight of 45 steel?

45 steel density is: 7.85g/cm ^ 3 (1) diameter 705mm (radius R is 35.25cm) height 240mm (H is 24cm) cylinder volume = π × R ^ 2 × H = 3.1416 × 35.25 ^ 2 × 24 = 93687.2244 (cubic centimeter) weight = volume × density = 93687.2244 × 7.85 = 735444.71154 (g) = 735.445kg (2)

Weight of cylinder 38.2mm in diameter and 7.2mm in height
stainless steel

Boss, how can I know the density of your stainless steel? Stainless steel is an alloy. I don't know the composition of your stainless steel. Of course, I don't know its density! However, I heard that there is an average density of 7.85g/cm & sup3;, so I'll use this data to calculate it for you
Mass = volume * density = bottom area * height * density = 3.14 * 1.91 & sup2; * 0.72 * 7.85 = 64.74 G
Ho ho, this one's answer is right. We just asked the mould factory to calculate with the computer,

The diameter of a cylinder is 36 cm and the height is 40 cm. What is the volume of the cylinder?

Volume = bottom area * height = 3.1415 * (36 / 2) * (36 / 2) * 40 = 40713.84
The volume of the cylinder is 40713.84 cubic centimeters

When a cylinder with a diameter of 10 cm on the bottom is cut in half along the diameter, the surface area increases by 200 square centimeters. What's the original volume

200 △ 2 × 10 = 10 cm (diameter)
Radius = 10 △ 2 = 5cm
Original volume = 3.14 × 5 × 5 × 10 = 785 CC

Cut a cylinder with a diameter of 10 cm along its diameter, and the surface area will be increased by 200 square cm

Use the square of 200 / 2 = 100 / 10 = 10 (height) (10 / 2) * 3.14 = 78.5 (bottom area)
78.5*10=785

If the height of a cylinder increases by 1 cm, the surface area increases by 6.28 square cm. If the height of the cylinder is 10 cm, what is the volume

6.28 / 1 = 6.28 cm
R = 6.28 / (3.14 * 2) = 1cm
V = sh = 3.14 * 1 * 1 * 10 = 31.4 cm3