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CautionCaution Speed and AccelerationSpeed and Acceleration
A static A static object object keeps keeps its its static static station station which which is is not not affected affected by by outside outside force, force, one one dynamicdynamic
object moves with the same speed which is not affected by outside force, this is inertia.object moves with the same speed which is not affected by outside force, this is inertia.
Because of inertia, one force affected backward when the truck is moving, one forceBecause of inertia, one force affected backward when the truck is moving, one force
affected forward when the truck is affected forward when the truck is stopping.stopping.
It is very dangerous to press the brake suddenly. It may result in capsizing or sliding downIt is very dangerous to press the brake suddenly. It may result in capsizing or sliding down
of the load because of huge force to the front.of the load because of huge force to the front.
Centrifugal force is present during turning and its direction is from the turning center to theCentrifugal force is present during turning and its direction is from the turning center to the
outer. If the force is strong enough, it may result in the capsizal of the truck. The rightouter. If the force is strong enough, it may result in the capsizal of the truck. The right --andand--leftleft
stable zones are very small, so the truck‘s speed must be reduced when turning to preventstable zones are very small, so the truck‘s speed must be reduced when turning to prevent
capsizing. If the truck is carrying a load with the forks raised high, the possibility of capsizing iscapsizing. If the truck is carrying a load with the forks raised high, the possibility of capsizing is
very great.very great.
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