I have a problem of a vehicle that impacts a barrier and knocks it over. At what minimum velocity does the barrier tip? (assuming it did not slide and there is no damage absorbing energy in the collision), sort like(adsbygoogle = window.adsbygoogle || []).push({});

Barrier 2 ft wide, 2 ft tall, 6 ft long, 3600 lbs.

Vehicle 2000 lbs, bumper height 1.5 ft.

If we use energy KE of vehicle stopped by the impact = PE of barrier to move the CG up to the tipping point, 1/2 m v^2 = m g h so, v = sqrt (2 m g h / m) = sqrt (2 * 3600 * 32.2 * (sqrt 2 -1)/ 2000) = 7 fps

the vehicle bumper height is not a factor and seems incorrect?

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# Velocity to knock over a barrier

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