Why do tractors have wide tyres?
ATo distribute weight over a larger area, reducing pressure on soil
BTo go faster across all cases in standard practice
CTo save fuel across all cases
DTo increase friction by common convention
Answer & Solution
Correct answer: A. To distribute weight over a larger area, reducing pressure on soil
1. Pressure = force / area, so more area means lower pressure.
2. Tractors are heavy and would sink into soft soil with thin tyres.
3. Wide tyres spread the weight over a larger area.
4. Lower pressure stops the tractor from sinking.
5. So wide tyres reduce ground pressure.
_Source: Selina Concise Physics ICSE Class 8, Ch 3 'Force and Pressure'_
Related questions
The instrument used to measure atmospheric pressure is the:Atmospheric pressure on the human body is roughly 100,000 Pa. Why don't we feel crushed?Friction acts:Action and reaction forces:Why are dams built thicker at the bottom than at the top?A camel can walk easily on desert sand because:Pressure at the bottom of a tall water column compared with a short column:Why is it easier to break a watermelon by pressing a needle than by pressing the palm?