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raeshun
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I am having trouble understanding g-force.So if a object with a mass of 100 kg is sitting on a platform in space.If the platform was accelerating at 10 m/s^2 upwards would the weight of the object be 1000 kg? If so why?
The kg is a measure of mass, not force. Weight is a force. So a "weight of 100kg" is scientifically incorrect. It is used in everyday speech to stand for "the force exerted by gravity at the Earth's surface on a 100kg mass", but in scientific terms that's (approximately) 1000 Newtons. Likewise, the force required to accelerate a 100kg mass at 10m/s2 in a weightless environment is 1000 N.raeshun said:I am having trouble understanding g-force.So if a object with a mass of 100 kg is sitting on a platform in space.If the platform was accelerating at 10 m/s^2 upwards would the weight of the object be 1000 kg? If so why?
CWatters said:The force on the platform would be
F=ma
=100kg x 10m/s2
=1000 Newtons (not Kg)
On Earth the force on the ground would be
F=mg
=100kg x 9.8m/s2
=980 Newtons.
About the same. So if this 100kg mass on the platform was a man he would feel roughly the same as he does on Earth (eg 1g).
To be precise he would be experiencing 10/9.8 = 1.02g
haruspex said:The kg is a measure of mass, not force. Weight is a force. So a "weight of 100kg" is scientifically incorrect. It is used in everyday speech to stand for "the force exerted by gravity at the Earth's surface on a 100kg mass", but in scientific terms that's (approximately) 1000 Newtons. Likewise, the force required to accelerate a 100kg mass at 10m/s2 in a weightless environment is 1000 N.
raeshun said:So if this happened on Earth ignoring air resistance would the person on the platform feel weightless?
If by "this" you mean the platform accelerating upwards at 10m/s2, they would feel a force of about 2g: 1g to stay put plus another to accelerate upwards.raeshun said:So if this happened on Earth ignoring air resistance would the person on the platform feel weightless?
Acceleration is the rate at which an object changes its velocity, while gravity is the force that pulls objects towards each other. Acceleration can be caused by various factors such as a change in speed or direction, while gravity is a constant force exerted by massive objects.
Acceleration and gravity are related in that the acceleration of an object in free fall due to gravity is always 9.8 meters per second squared (m/s²) near the Earth's surface. This means that objects will accelerate towards the Earth at a constant rate due to the force of gravity.
The acceleration due to gravity on other planets is different from Earth due to variations in mass and size. For example, on the surface of the moon, the acceleration due to gravity is 1.6 m/s², while on Jupiter it is 24.8 m/s².
Acceleration can be measured using a device called an accelerometer, which measures the change in velocity of an object. Gravity can be measured using a device called a gravimeter, which measures the strength of the gravitational field at a specific location.
The relationship between acceleration, velocity, and time can be described using the equation a = ∆v/∆t, where a is acceleration, ∆v is the change in velocity, and ∆t is the change in time. This means that the greater the acceleration, the larger the change in velocity over a given period of time.