For the delivery truck shown: The mass of the truck is 4000 kg. The horizontal distance from the rear tires to the center of mass, G, is L1 = 3 m The vertical distance from the ground to G is d=3m The horizontal distance from the rear tires to the front tires is L2 = 5 m.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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For the delivery truck shown:
The mass of the truck is 4000 kg.
The horizontal distance from the rear tires to
the center of mass, G, is L1 = 3 m
The vertical distance from the ground to G is
d = 3m
The horizontal distance from the rear tires to
the front tires is L2 = 5 m.
d
The delivery truck is traveling at 20 m/s
when the brakes are applied.
The truck skids to a stop, so that the friction
force is applied to the tires by the road.*
The coefficient dynamic friction is uk = 0.60
*If it did not skid, then the friction force
would be between the brake pads and the
brake disc, which would be above the road.
Calculate the distance that the truck travels before it stops.
Use Σ MA = Ia + d x m*a for the following:
'O'
Calculate the left side of this equation: Σ MA
G
L1 →
L2
Calculate the right side of this equation: I*α + d x m*a
d+ x m*a is from r x m*a (cross product), so, determine the sign by considering the cross product.
Set the left and right right sides equal to each other and solve for NB
Calculate the normal force on each of the rear tires and each of the front tires.
Transcribed Image Text:For the delivery truck shown: The mass of the truck is 4000 kg. The horizontal distance from the rear tires to the center of mass, G, is L1 = 3 m The vertical distance from the ground to G is d = 3m The horizontal distance from the rear tires to the front tires is L2 = 5 m. d The delivery truck is traveling at 20 m/s when the brakes are applied. The truck skids to a stop, so that the friction force is applied to the tires by the road.* The coefficient dynamic friction is uk = 0.60 *If it did not skid, then the friction force would be between the brake pads and the brake disc, which would be above the road. Calculate the distance that the truck travels before it stops. Use Σ MA = Ia + d x m*a for the following: 'O' Calculate the left side of this equation: Σ MA G L1 → L2 Calculate the right side of this equation: I*α + d x m*a d+ x m*a is from r x m*a (cross product), so, determine the sign by considering the cross product. Set the left and right right sides equal to each other and solve for NB Calculate the normal force on each of the rear tires and each of the front tires.
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