Home > categories > Machinery & Equipment > Gantry Cranes > Help with understanding this physics concept.?

Question:# Help with understanding this physics concept.?

Let's say there is this situation: A load of bricks is being lifted by a crane at the steady velocity of 5 m/s when one brick falls off 6m above the groundWhat is the greatest height the brick reaches above ground, how long does it take to reach the ground, what is the speed just before it hits the ground? Now that was the question, but I would like to know the concept behind this: It seems a bit too easy for the greatest height the brick has reached to be 6 m.but the brick falls off at 6mDoes this mean that it goes a bit higher than 6m and then falls, or just simply falls at 6 m? Please help!

Well you see, the brick can't simply 'fall' once it loses contact with the other bricks because it is already moving UPWARDSWhat happens is that the brick keeps moving upwards with the initial speed of 5m/sIt can't just suddenly fall because the brick's inertia (resistance to changes in motion) carries it forwardThe brick reaches a maximum height above the position where it was when it initially lost contact, and then dropsSo to find the maximum height it can reach, simply apply the equations of motions as you've probably done many times before: The one you need is v^2 - u^2 2as u 5 m/s v 0 m/s (at the maximum, the brick will stop moving) a -9.8 m/s^2 (DON'T forget the minus sign) t don't care s what we want to know So just rearrange for sThis then tells us the extra height the brick travels after it loses contactI calculated it to be 1.28m So now, to get the maximum height above ground, you simply add 6 m (the height above ground) to thisSo the final answer is 7.28mI hope this helps!

- Dongying power plant with 0.6mm thick insulation aluminum coil, manufacturers can be divided into small volumes?
- The export aluminum volume is CIF. If there is no insurance policy, how will the customs premium be collected?
- Aluminum silicate felt fiber needle blanket noise reduction?
- What's good for antirust aluminium coil?
- Aluminum coil thickness measurement, real-time measurement of aluminum coil thickness value, you can use displacement sensor?
- Guangdong where there are professional to do around the paper corner, is packing steel coil, aluminium coil that protect the edge of the both ends of the cylinder. Just the kind of picture.
- What are the manufacturers of color coated aluminium rolls made of aluminium in Jiangsu?
- Can we provide raw materials, aluminium coils and aluminum panels for several integrated ceilings?
- Cost of aluminium coil coating fluorocarbon paint?
- How much is one square aluminum gate and five hard door?

Rail Mounted GantryCrane And RiggingCrane LiftingGantry Crane AdalahA Crane BirdRail CraneCrane RailStainless Steel ScrapStainless Steel MagnetScrap Stainless SteelMagnet Stainless SteelStainless Steel Scrap ValueSimple Beam BridgeGolden Ear BridgeMobile Crane OperatorKrupp CranesSandhill CraneUsed Crawler CraneTruck Mounted Mobile CraneTower Crane Hire