Everyone has Same comment about Batman: He’s cool because he’s just a regular guy, but he’s also a superhero. Yes, he has no superpowers.However, what does he Do Possession is a combination of skills and equipment.
in the movie Batman, we can see him using one of his “toys” – his rising gun. (It’s also called a grappling gun or grappling gun.) Batman uses it to fire something like a grappling hook, which is attached to a cable. Once it’s attached to the high point, a motor inside the gun winds the cable, pulling Batman up.
In this scene, Batman is in a building with a group of Gotham police officers who detain him. He didn’t think it was a good idea. After breaking free, he ran to an inner stairwell, shot the ascending cable near the top of the stairwell, and started the motor to pull him up. Spoiler: he ran away. (But you probably know this.)
Now for the physical calculations: what kind of battery or power supply does his ascender need and how much power does it need? Let’s start with some background on energy.
rising energy
One of the key ideas in understanding energy is to define a system of interest, which is the collection of objects we want to study. (Of course, the most complete system is the entire universe, but it’s not practical to deal with the whole thing at once. Instead, we just want to isolate the objects we’re interested in.)
Let’s use the following system: Batman plus the ascender (and its battery) and Earth. (You might think the Earth added to the system is a weird thing, but hold on. We’ll get there.)
Once we have a system, we can use one of the most important concepts in physics: the principle of function. This means that the work done on the system is equal to the change in the energy of the system. But what exactly is energy?
This is actually a hard problem, but here’s my best answer: energy is not a real thing, but a way of tracking different interactions. Energy also comes in different forms. For example, kinetic energy is related to the motion of an object, and potential energy is an energy that depends on the position of an object.
Therefore, work is a way of adding or removing energy from a system. In terms of force, we define work as:
Illustration: Rhett Allen
