Search results
Gravitational pull of gravity
study.com
- The weight of an object is the force on it due to the gravitational pull of gravity at that point. Since it is a force, weight is measured in Newtons (not kilograms).
www.bbc.co.uk/bitesize/guides/z6x48xs/revision/3Weight, mass and gravity - Gravity and weight - 3rd level ...
People also ask
How is weight measured in physics?
What unit is weight measured in?
How do you measure weight on a Newton meter?
What is a Newton meter used for?
How do you calculate the weight of an object?
How do you find the mass and weight of an object?
Jul 16, 2015 · What was the reason to use kilograms to measure weight (e.g. body weight, market vegetables etc.) instead of using newtons in everyday life?
- Hot Linked Questions
10 questions linked to/from Why do we use kilograms instead...
- Units About Weight
It is in fact mass that is measured with the unit Kilogram...
- Jake
Why do we use kilograms instead of newtons to measure weight...
- Archimedes Principle and Specific Gravity
The balance can only measure the downward force exerted on...
- Hot Linked Questions
Weight, like other forces, is measured in newtons. When one measures the weight of an object in an elevator, one is required to look at weight as the measure of the sum or difference of the acceleration of gravity and of the surface the object is resting on. Consider the following example, where the acceleration of an elevator is 4.2 m/s 2.
- Overview
- What is weight?
- Is weight different from mass?
- Example 1: Airplane weight
- Example 2: Finding mass
Weight is another word for the force of gravity.
What is weight?
Weight W is just another word for the force of gravity Fg . Weight is a force that acts at all times on all objects near Earth. The Earth pulls on all objects with a force of gravity downward toward the center of the Earth. The magnitude of the force of gravity can be found by multiplying the mass m of the object by the magnitude of the acceleration due to gravity g=+9.8m s2 .
[Why isn't g negative?]
This force of gravity Fg=mg (or "weight") is exerted on all objects by the Earth regardless of which way those objects are moving, and what other forces are exerted on the objects. In other words, there will be a gravitational force of magnitude mg exerted downward on all objects near the Earth whether they are falling down, flying up at an angle, sitting at rest on a table, or accelerating upward in an elevator. There may be other forces that contribute to the acceleration of the object, but the force of gravity is always present.
[What if we go into outer space?]
Weight W is just another word for the force of gravity Fg . Weight is a force that acts at all times on all objects near Earth. The Earth pulls on all objects with a force of gravity downward toward the center of the Earth. The magnitude of the force of gravity can be found by multiplying the mass m of the object by the magnitude of the acceleration due to gravity g=+9.8m s2 .
[Why isn't g negative?]
This force of gravity Fg=mg (or "weight") is exerted on all objects by the Earth regardless of which way those objects are moving, and what other forces are exerted on the objects. In other words, there will be a gravitational force of magnitude mg exerted downward on all objects near the Earth whether they are falling down, flying up at an angle, sitting at rest on a table, or accelerating upward in an elevator. There may be other forces that contribute to the acceleration of the object, but the force of gravity is always present.
[What if we go into outer space?]
Yes, weight is different from mass. Weight W is the force of gravity Fg exerted on an object. Mass m is a measure of the inertia of the object (i.e. how much it resists changes in velocity). They are related since larger masses will have larger weights due to W=mg . For example, a mass of 2kg will have a weight of magnitude W=(2 kg)(9.8m s2)=19.6 N .
The weight of an object will change if the object is brought farther away from Earth, or placed on a different planet, since the force of gravity on the object will change. However the mass of the object will remain the same regardless of whether the object is on Earth, in outer space, or on the Moon.
An airplane of mass 4,500 kg is taking off, flying through the air accelerating forward and upward. There is a thruster force of 6,700 N on the plane in the direction of motion and an air resistance force of 4,300 N .
What is the force of gravity on the airplane during takeoff?
The force of gravity is always nothing more nor less than mg regardless of any other forces or accelerations involved. So we can find the force of gravity on the plane (i.e. weight) by simply using,
Fg=mg(use the formula for weight)
An African forest elephant has a weight of 25,000 N .
What is the mass of the African forest elephant?
Weight is another word for the force of gravity mg . We can solve for the mass using the formula W=Fg=mg.
W=mg(use the formula for weight)
25,000 N=m(9.8 m s2)(plug in values for weight and g)
m=25,000 N(9.8 m s2)(solve for mass m)
Aug 25, 2020 · Mass may be measured using an ordinary balance. Weight is measured using a spring balance. Mass is measured in grams (g) and kilograms (kg). Weight is measured in Newtons (N).
The weight of an object is measured in newtons rather than in kilograms. The formula 𝑊 = 𝑚 𝑔 can be rearranged to make 𝑔 the subject, giving 𝑔 = 𝑊 𝑚. We see from this that the SI unit of gravitational field strength is newtons per kilogram (N/kg).
Weight is the force that acts on mass due to gravity and is therefore measured in newtons (N). Calculating weight and mass. The following equation can be used to calculate the weight of...
Apr 10, 2024 · Mass and weight are often used interchangeably in everyday conversation. For example, our medical records often show our weight in kilograms but never in the correct units of newtons. In physics, however, there is an important distinction. Weight is the pull of Earth on an object.
