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Hi guys i'm a truck driver. Not sure if i'm posting in the right place so i apologise. Iv'e been on a course today about trucks. The course leader was talking about forces. A trucks force forwards can be 0.8. Is this true?
We were talking about carrying a load. We have to make sure the load is safe. The biggest force a hgv truck produces under breaking is 0.8 going forwards. does this seem correct?Hi guys i'm a truck driver. Not sure if i'm posting in the right place so i apologise. Iv'e been on a course today about trucks. The course leader was talking about forces. A trucks force forwards can be 0.8. Is this true?
This is probably correct . My real questioning is when he said that.. Because people get whiplash. There is a force pushing backwards when you break hard. He says a pallet on the truck will move backwards after a crash???We were talking about carrying a load. We have to make sure the load is safe. The biggest force a hgv truck produces under breaking is 0.8 going forwards. does this seem correct?
A truck’s force certainly could be 0.8 in some units. Are you familiar with the concept of units? Like distances can be measured in inches or miles or meters. Forces are usually measures in newtons or pounds (pounds can be confusing because it is sometimes a unit of force and sometimes a unit of mass and so context is needed)A trucks force forwards can be 0.8. Is this true?
For those of us in the U.S., a "HGV" truck is a Heavy Goods truck. Which is what we would call an "18 wheeler" or a "semi-trailer truck".We were talking about carrying a load. We have to make sure the load is safe. The biggest force a hgv truck produces under breaking is 0.8 going forwards. does this seem correct?
Iv'e had a drink. Bare with me. On the course he says there is a force pushing backwards after a crash. He references whiplash. If a pallet off bricks was moving forward on the wagon during a crash. could a force push it backwards afterwards?A truck’s force certainly could be 0.8 in some units. Are you familiar with the concept of units? Like distances can be measured in inches or miles or meters. Forces are usually measures in newtons or pounds (pounds can be confusing because it is sometimes a unit of force and sometimes a unit of mass and so context is needed)
For a frontal collision I can’t envision how it could happen. For a rear end collision certainly the can happen.Ok. After a collision. He is saying a pallet off bricks (anything) will move backwards after a crash. I this possible?
Can you explain the argument in detail?Can i get any feedback to show how he is going wrong?
A frontal crash or a rear end crash?the lorry crashes
he states there is a force pushing the pallet back? how is this possible? txfrontal crash. on his diagram after the crash the pallet has moved backwards in relation to the headboard of the truck.
When the truck crashes its acceleration is backwards (in the external inertial frame). So in the truck’s frame the inertial force is forwards. Relative to the truck the bricks will be accelerated forwards. There isn’t any rearward force on the bricks relative to the truck.a lorry is traveling forward. a pallet of bricks is against the headboard of the trailer. the lorry crashes. after the crash the pallet of bricks moves backwards. he has an arrow on his chart showing the pallet moving backwards. he says for every action equal reaction. the pallet is moving backwards in his opinion.
You could get some bounce, perhaps -- the truck bounces from the wall and the brick pallet bounces from the front wall of its compartment. One would have to speculate about what components are elastic enough to provide much bounce. An argument on a basis of "equal and opposite reaction" sounds like vigorous handwavium.When the truck crashes its acceleration is backwards (in the external inertial frame). So in the truck’s frame the inertial force is forwards. Relative to the truck the bricks will be accelerated forwards. There isn’t any rearward force on the bricks relative to the truck.
I'm assuming i was correct then? He's a good teacher. I'm here because i want to help him and his lessons. I'l give him this link tomorrowWhen the truck crashes its acceleration is backwards (in the external inertial frame). So in the truck’s frame the inertial force is forwards. Relative to the truck the bricks will be accelerated forwards. There isn’t any rearward force on the bricks relative to the truck.
From Wikipedia:teacher mentions in his lesson that the head rest in a car is to stop whip lash. Am i right in thinking that you can only get whiplash from a rear end hit?
A WHIPS [Whiplash Protection System] equipped seat is designed so that the entire backrest helps to protect the front occupant's neck in a case of a rear impact.
No.Am i right in thinking that you can only get whiplash from a rear end hit?