Gravity, Light & Movement: Exploring the Possibilities

In summary, the conversation discusses the possibility of a scale registering weight when exposed to a strong gravitational field and a light beam. It also explores the concept of light having momentum and exerting pressure, potentially causing a scale to register weight. The link between weight and pressure is also mentioned.
  • #1
cragar
2,552
3
if we had a scale with a mirror on top then we zeroed the scale and the scale was on Earth well in our case we need a stronger gravitational
field and a light beam comes by the scale and then enters the strong gravitational field
thus the light is bent into the scale and hits the mirror and bounces off would the scale register a weight? all-be it a small one. or if we had a space-craft in outter space with mirrors on it and we shined a huge laser at it would the space-craft move , for every action there is an equal but opposite reaction.
 
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  • #3
does this imply that light has mass, cause if the scale registers weight
w=mg i know p=E/c for a photon
 
  • #4
Light (a whole bunch of photons) exerts a pressure on the scale's surface. See link: http://en.wikipedia.org/wiki/Radiation_pressure.

Weight is a force, w = mg. Pressure (radiation pressure in this case) times area is a force too, F = pA.
 
  • #5
i see that makes sense now .
 

What is gravity?

Gravity is the force that pulls objects with mass towards one another. It is responsible for keeping planets in orbit around the sun and objects on Earth from floating away into space.

How does light travel?

Light travels in a straight line at a constant speed of 299,792,458 meters per second. It can travel through a vacuum and various mediums such as air or water.

What are the different types of movement?

There are three main types of movement: linear, rotary, and oscillatory. Linear movement is a straight line motion, rotary movement is a circular motion, and oscillatory movement is a back and forth motion.

How does gravity affect movement?

Gravity affects movement by pulling objects towards the center of the Earth. This force can either speed up or slow down an object's movement depending on the direction of the force and the object's initial velocity.

What are some real-world applications of exploring gravity, light, and movement?

Exploring gravity, light, and movement has many real-world applications such as understanding planetary motion, designing efficient transportation systems, and developing new technologies such as lasers and satellites.

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