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2 cards from this section. Quick, good the night before a test.
What is the basic lifting mechanism found in cranes?
Think of what lifts the load in various devices.
Name two types of motion cranes can perform.
Consider how cranes move and lift.
What type of crane allows for 360-degree rotation?
Think about the functions a crane needs to perform in tight spaces.
True or False: The weight of the boom affects the crane's stability.
Think about balance and load in a lever system.
If a crane is lifting a load of 1000 kg, with its boom weighing 200 kg, and a wind load of 50 kg, calculate the overturning moment given the fulcrum is 5 meters from the load.
Remember to include all weights on the load side.
A tower crane has a counterweight of 800 kg. If the crane weighs 1200 kg (excluding the boom), can it safely lift a load of 1500 kg positioned at a distance of 4 meters from the fulcrum?
Calculate both moments and compare for stability.
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