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Uniform and Non Uniform

An unbanked c...

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An unbanked curve has a radius of 60 m. Coefficient of friction between the tyre of truck and road is 0.75 The distance between two front wheel of truck is 2 m. If the truck exceeds the speed ofsafe limit, then their inner wheel leaves the the ground first why

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Q. An unbanked curve has a radius of

60 m

. Coefficient of friction between the tyre of truck and road is

0.75

. The distance between two front wheel of truck is

2 m

. If the truck exceeds the speed of safe limit, then select the correct statement and justify your asnwer.
1) Inner wheels leave the ground first.
2) Outer wheels leave the ground first.

Q. Find the maximum speed at which a truck can safely travel without toppling over, on a curve of radius

250 m

. The height of the centre of gravity of the truck above the ground is

1.5 m

and the distance between the wheels is

1.5 m

, the truck being horizontal.

Q. Coefficients of friction between the flat bed of the truck and crate are

μ_{s} = 0.8

μ_{k} = 0.7.

The coefficient of kinetic friction between the truck tires and the road surface is

0.9

. If the truck stop from an initial speed

15 m / s

with maximum braking (wheels skidding). Determine where on the bed the crate finally comes to rest. (Take

g = 10 m / s^{2}

)

Q. A crate is on the flat surface of a truck of coefficient of static friction

μ_{s} = 0.8

and coefficient of kinetic friction

μ_{k} = 0.7

. The coefficient of kinetic friction between the truck tires and the road surface is

0.9

. If the truck suddenly stops from an initial speed of

15 m / s

with maximum braking (wheels skidding), determine the displacement of the crate before it comes to rest.

Q. Why are double tyres provided at the rear wheels of a truck.

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