hebaarif2007 hebaarif2007

05-10-2020
Physics

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4. A crane has a weight of 85000 N and it rests on two caterpillar tracks which have a total
contact area with the ground of 1.7 m2

as shown in the fig. below.

a. Calculate the pressure that the crane exerts on the ground.
b. What happens when the area of the caterpillar track decreases?

Respuesta :

dzharvey00 dzharvey00

05-10-2020

Answer:

50kPa and if the area decreases, the pressure increases

Explanation:

P=F/A; P=pressure, F=force, A=area

85000N/1.7 m^2 = 50000 N/m^2; Pa = Pascal = N/m^2

=50 kPa

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