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Question

Find the maximum speed at which a truck can safely travel without toppling over, on a curve of radius 250m. The height of the centre of gravity of the truck above the ground is 1.5m and the distance between the wheels is 1.5m, the truck being horizontal.

A
15ms1
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B
25ms1
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C
30ms1
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D
35ms1
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Solution

The correct option is D 35ms1
The Truck will topple about the outer wheels. let the height of the center of gravity be h, distance between the tyres be d, and radius of curvature be R, for toppling the maximum speed is given by,(equating the torque by gravity and torque by centrigal force about the outer wheel) mvmax2Rh=mgd2
vmax=Rgd2h=35.35m/s


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