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What is the difference between weight and mass?
Mass is the amount of matter in an object, measured in kilograms, while weight is the force exerted by gravity on an object, measured in newtons (N).
How is weight calculated?
Weight is calculated using the formula: Weight = Mass × Gravitational Field Strength (W = m × g).
What is the gravitational field strength on Earth?
The gravitational field strength on Earth is approximately 9.8 N/kg.
What is the mass of an object on the Moon compared to Earth?
The mass of an object is the same on the Moon as on Earth, but its weight would be one-sixth as much on the Moon due to lower gravitational field strength.
How does gravity affect the motion of objects?
Gravity causes objects to fall towards the Earth, accelerating them at 9.8 m/s² (on Earth).
How does the weight of an object change with altitude?
The weight decreases with altitude because gravitational field strength becomes weaker as you move farther from Earth’s surface.
What is the formula for gravitational potential energy?
Gravitational potential energy is given by the formula: GPE = mass × gravitational field strength × height (GPE = m × g × h).
Why do objects of different masses fall at the same rate in a vacuum?
In the absence of air resistance, gravity acts equally on all objects, causing them to fall at the same rate regardless of mass.
What is the relationship between weight and gravitational field strength?
Weight is directly proportional to the gravitational field strength.
What happens to an object’s weight if the mass remains constant but the gravity increases?
If the gravitational field strength increases, the object’s weight increases.
How is weight measured?
Weight is measured using a force meter or spring balance.
What happens to an object’s weight if the mass remains constant but the object moves farther from the center of Earth?
The weight decreases as the object moves farther from Earth due to a weaker gravitational field.
Can an object have a mass but no weight?
No, an object with mass will always experience weight due to gravity. However, an object can have weight in zero gravity, e.g., in space.
What is the acceleration due to gravity?
The acceleration due to gravity on Earth is approximately 9.8 m/s².
How does weight vary on other planets?
Weight varies depending on the gravitational field strength of the planet. For example, on Mars, the gravity is about 3.7 N/kg, so weight is lower.
