The figure shows a tyre used on a large earth-moving vehicle. a. When the vehicle is loaded,

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The figure shows a tyre used on a large earth-moving vehicle.


a. When the vehicle is loaded, the area of each tyre in contact with the ground is a rectangle of sides 1.0 m and 0.5 m. 

i. Calculate the area in m2 of contact of one tyre with the ground. 

ii. The vehicle has four of these tyres. Calculate the total area in m2 of contact with the ground. 

b. When the vehicle is loaded, it weighs 100 000 N. Calculate the pressure in N/m2 exerted on the ground by the tyres.

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