On December 5, 2009, on the eve of the United Nations Climate Change Conference, an artist created an arctic bear ice sculpture (as shown in the picture) in a square in Copenhagen, Denmark. During the conference, the ice sculpture will gradually melt, revealing the copper skeleton. The organizers hope to arouse people's attention to global warming through the melting of the ice sculpture The contact area between the polar bear ice sculpture and the base is 1.2 m 2. Calculation: ① the mass of the ice used by the artist; ② the total gravity of the polar bear ice sculpture; ③ the pressure of the polar bear ice sculpture on the base. (ρ ice = 0.9 × 103 kg / m3)

On December 5, 2009, on the eve of the United Nations Climate Change Conference, an artist created an arctic bear ice sculpture (as shown in the picture) in a square in Copenhagen, Denmark. During the conference, the ice sculpture will gradually melt, revealing the copper skeleton. The organizers hope to arouse people's attention to global warming through the melting of the ice sculpture The contact area between the polar bear ice sculpture and the base is 1.2 m 2. Calculation: ① the mass of the ice used by the artist; ② the total gravity of the polar bear ice sculpture; ③ the pressure of the polar bear ice sculpture on the base. (ρ ice = 0.9 × 103 kg / m3)

① (2) the total gravity of ice sculpture: g = (m ice + m copper) g = (1.8 × 103kg + 3.2 × 103kg) × 9.8n/kg = 4.9 × 104n; (3) the pressure of polar bear ice sculpture on the base: F = g = 4.9 × 104n, P = FS

Help to do a physics calculation problem in grade three, urgent
Wang Meng skates. The total weight of his skate and his skate is 60kg. The contact surface of each skate is 15cm square (10N / kg)
1. How much gravity does Wang Meng receive?
2. How much pressure does he exert on the ice when he glides on one foot?

Gravity g = mg = 60 * 10 = 600N
P=F/S=600/(15*10^-4)=4*10^5PA

The calculation process is needed
1. A piezometer is connected to the tap water. The position of the tap water is 1.5m higher than the ground. The reading of the piezometer is the quintic PA of 2.94 * 10
2. When Xiao Ming came home from school, he saw a sleeping flat bottom glass in the middle of the horizontal tea table, as shown in the figure (the figure is an inverted isosceles trapezoid, the one with the upper bottom longer than the lower bottom). So he measured the water depth of 12 cm with a tape measure at home, A rough measurement of the bottom area of the glass is 2@10 It is estimated that the total mass of water and cup is about 0.4KG, and the following questions are put forward. Please answer these questions together with him (G is 10N / kg, ρ water = 1.0 * 10 cubic kg / m3)
1) Total gravity of water and cup
2) The pressure of water on the bottom of the cup
3) Pressure of cup on horizontal tea table
Do as much as you can

1) Known: m water + m cup = 0.4KG, g = 10N / kg, g = 0.4KG * 10N / kg = 4n2) known: ρ water = 1.0 * 10 to the third power kg / m3, g = 10N / kg, H = 12cm = 0.12M, P from P = ρ water GH to the third power of P = 1000kg / m3 * 10N / kg * 0.12M = 1.2 * 10, PA3) known: S = 2 * 10