A man is standing on ice. The area of the soles of his boots is 300 cm squared. How many times will a person’s

| September 3, 2021 | education

A man is standing on ice. The area of the soles of his boots is 300 cm squared. How many times will a person’s pressure on the ice change if he puts on skates? The length of the ridge blade is 20 cm and its width is 4 mm.

To determine the increase in pressure of the specified person on the ice, we use the relation: k = P2 / P1 = (Ft / S2) / (Ft / S1) = S1 / S2 = S1 / (n * a * b).

The values of the variables: S1 – the area of the soles of the boots (S1 = 300 cm2); n is the number of skates (n = 2 pcs.); a is the length of the blade of the taken skate (a = 20 cm); b – blade width (b = 4 mm = 0.4 cm).

Calculation: k = S1 / (n * a * b) = 300 / (2 * 20 * 0.4) = 18.75 p.

Answer: After putting on two skates, the person’s pressure on the ice will increase by 18.75 r.



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