Gravity
Gravity is a force, that acts on a object with mass, gravity is a force emitted by gravitons, it pulls objects
Formula Of Gravity : G = W/M, w = weight and m = Mass
Weight
Weight is a mass of a object acted on with gravity, weight can be classified as way of calculating a persons mass in earth, as earth is affected by gravity the mass is called weight
Formula Of Weight : W = mg, M = Mass And G = Gravitational Force
Mass
Mass is the weight of an object without the gravitational force
Mass Formula : The formula of mass goes like M = W/G, w = weight and G = Gravity
Difference Between Mass And Weight
The mass of an object is measured in kilograms, it tells us how much matter a object is composed of.
The weight of an object is measured in newtons , its the gravitational object acting on the object
Questions
Difference between mass and weight
Answers
The difference between weight and mass is that weight is affected by gravity while mass is the object with no resultant forces
Terminal Velocity
The greatest speed reached by a object moving in fluid
How does the gravitational force between two objects depend on their masses and the distance between them?
What is the value of the acceleration due to gravity on Earth, and how does it vary with altitude and location?
How do mass and weight change when an object is taken to the Moon or another planet?
What are some real-life examples of how gravity affects our daily lives?
How do scientists measure the mass of distant celestial objects, such as stars and planets?
1. If an astronaut has a mass of 80 kg on Earth, calculate their weight on the Moon, where gravity is about 1/6th of Earth's gravity. What would be their weight on Earth and on the Moon?
2. A 10 kg object is dropped from a tall building. If the gravitational acceleration is 9.8 m/s² and air resistance is negligible, what would be the object's weight, and at what speed would it be moving after 5 seconds?
3. A rock weighs 300 N on Earth. If it were taken to Mars, where the gravitational acceleration is 3.7 m/s², what would be its weight on Mars?
4. An object reaches terminal velocity while falling through the air. Explain why it no longer accelerates despite gravity acting on it, and describe the forces acting on the object at terminal velocity.
5. Two planets have masses of 5 x 10²³ kg and 2 x 10²³ kg, respectively, and are 4 x 10⁶ meters apart. Calculate the gravitational force between them using Newton’s law of gravitation.