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Stopping a speeding bus with the heel of your foot.
Could this be related to "lifting strength" ?
Could this be related to "lifting strength" ?
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What kind of feat is this?
- Thread starter Pepper14832
- Start date
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Durability and lifting strength
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- Thread starter
- #3
Alright, help me with this.
I don't know how fast the bus is going. But I know it's a typical greyhound bus.
There's 3 curb weights. 35,100 lbs, 44,400 lbs OR 48,000lb
Let's use the median. 44,400 lbs to Kilos is 20,139.50kg
If it was 48,000 it would be 21,772.43kg
So, class 25.
I don't know how fast the bus is going. But I know it's a typical greyhound bus.
There's 3 curb weights. 35,100 lbs, 44,400 lbs OR 48,000lb
Let's use the median. 44,400 lbs to Kilos is 20,139.50kg
If it was 48,000 it would be 21,772.43kg
So, class 25.
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- Thread starter
- #4
But Speed should also add to the force?
- 1,421
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- Thread starter
- #5
Considering a City Bus is going at least 30, 35mph I don't see why Class 50 couldnt be possible rating for this feat.
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If you calc the force of the bus you can get Lifting Strength and if you calc it's KE you get durability
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- Thread starter
- #7
I'm going to try and calc the force of the bus.
How much force is required to stop a bus (in 10 seconds) with the mass of 48,000lbs (21,772kg) moving at a speed of 49km/h (30mph) ?
49km/h = 13.61 m/s
The acceleration on the bus = ( v - u)/t = ( 0m/s - 13.61 m/s)/ 10s= -1.36 m / s2 ( minus sign implies deceleration)
Force used to stop the bus = mass of the bus in kg× deceleration = 21,722kg × -1.36m / s2
End Result = -29,541.82N
29541N = 6641.08lbf
48,000lb +6641.08lbf = 54,641.08 Total
54,641.08lbs to kg = 24,784.78kg. So still Class 25 I believe. But close to Class 50
How much force is required to stop a bus (in 10 seconds) with the mass of 48,000lbs (21,772kg) moving at a speed of 49km/h (30mph) ?
49km/h = 13.61 m/s
The acceleration on the bus = ( v - u)/t = ( 0m/s - 13.61 m/s)/ 10s= -1.36 m / s2 ( minus sign implies deceleration)
Force used to stop the bus = mass of the bus in kg× deceleration = 21,722kg × -1.36m / s2
End Result = -29,541.82N
29541N = 6641.08lbf
48,000lb +6641.08lbf = 54,641.08 Total
54,641.08lbs to kg = 24,784.78kg. So still Class 25 I believe. But close to Class 50
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- Thread starter
- #8
I am probably wrong tho. I'm not good at math
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- #9
I edited my mistakes the formula should be good
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- #10
There.
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