How way-out can I be?
Now, you could explain the principle of moments using a metre rule and a few bits of plasticene. But where’s the fun in that?
You’ve probably seen hoists like this before, perhaps lifting workers up to fix streetlights.
As well as going up, they can also reach out sideways. How far? Let’s find out…
While the crane’s hoisting him out, Gareth takes a moment to explain.
The hoist has a long arm, at one end of which is… well, the crane. That’s a massive weight.
Dangling from the other end is Gareth. Who – joking aside – doesn’t weigh very much compared to the crane.
So he can be a long way from the pivot point before the whole thing…
…overbalances, and dumps him in the drink.
That’s the theory. Time to see what actually happens.
Far enough?
Nah, further!
Look at that! The crane’s so heavy, it can safely balance Gareth right at the end of this massive overhang. Its computer monitors the loads on the stabilising legs, and makes sure the operator is perfectly safe at all times. Amazing.