- Is force measured in kg?
- What tool measures force?
- What is friction force measured in?
- What type of force is pressure?
- What is the formula for gravity?
- How fast is gravity?
- How fast is 1 G Force in mph?
- Can we create microgravity on Earth?
- What is the force of gravity in Leo?
- How do astronauts shower?
- Why is gravity a fictitious force?

## Is force measured in kg?

That is, it is the weight of a kilogram under standard gravity. Therefore, one kilogram-force is by definition equal to 9.80665 N. Similarly, a gram-force is 9.80665 mN, and a milligram-force is 9.80665 μN….

kilogram-force | |
---|---|

Unit of | Force |

Symbol | kgf |

Conversions | |

1 kgf in … | … is equal to … |

## What tool measures force?

spring scale

## What is friction force measured in?

In the 1700s, the term “tribometre” was coined by Goldsmith to refer to a device to measure friction, but in current usage, the scope of the term tribometer has been broadened to mean an instrument used to measure friction, wear, or both.

## What type of force is pressure?

When a force is exerted on an object it can change the object’s speed, direction of movement or shape. Pressure is a measure of how much force is acting upon an area. Pressure can be found using the equation pressure = force / area. Therefore, a force acting over a smaller area will create more pressure.

## What is the formula for gravity?

The mathematical formula for gravitational force is F=GMmr2 F = G Mm r 2 where G is the gravitational constant.

## How fast is gravity?

The best results, at the present time, tell us that the speed of gravity is between 2.993 × 10^8 and 3.003 × 10^8 meters per second, which is an amazing confirmation of General Relativity and a terrible difficulty for alternative theories of gravity that don’t reduce to General Relativity!

## How fast is 1 G Force in mph?

An acceleration of 1 G is equivalent to a speed of about 22 mph (35 km/h) per second.

## Can we create microgravity on Earth?

There are very few ways to simulate microgravity on Earth; besides the drop towers, microgravity research takes place in underwater neutral buoyancy simulators and in the sky in the C-9 astronaut training aircraft that is able to achieve about 20 seconds of near-weightlessness as it soars and dips.

## What is the force of gravity in Leo?

The pull of gravity in LEO is only slightly less than on the Earth’s surface. This is because the distance to LEO from the Earth’s surface is much less than the Earth’s radius. However, an object in orbit is, by definition, in free fall, since there is no force holding it up.

## How do astronauts shower?

On the ISS, astronauts do not shower but rather use liquid soap, water, and rinseless shampoo. They squeeze liquid soap and water from pouches onto their skin. Then they use rinseless soap with a little water to clean their hair. (See this video of astronaut Karen Nyberg washing her hair in space.)

## Why is gravity a fictitious force?

In general relativity, gravity appears as a fictitious force; this is because GR attributes the apparent acceleration of gravity to the curvature of spacetime. You don’t “feel” gravity in an inertial reference frame (e.g. when the elevator cable snapped) because in that frame there’s no force acting on you.