Question

1. What are the differences between
the mass of an object and its
weight?
2. Why is the weight of an object on
the moon = th its weight on the
earth?
5 Thrust and Pressure​

Answer 1

Answer:

1. Mass of an object is a measure of the substance contained in the body. It is independent of the gravitational force on any planet ,

In other words, the mass of a body remains unchanged on any planet.

But, weight is the product of mass with gravitational acceleration on that planet.

So , weight varies with planets.

2. Weight of object on moon is 1/6th of the weight of object in earth because the Gravitational acceleration of moon is 1/6th of the acceleration in earth.

3. Thrust refers to the force applied perpendicular to the surface.

On the other hand, pressure is the thrust divided by the area on which the thrust acts.

[P = F/A].

Answer 2

Question :

1. What are the differences between the mass of an object and its weight?

AnswEr :

Mass is the measurement for an object or a body which is constant at any location in the universe or any Gravitational Force applied to it.

⋆ In Simple Words, Mass is Unchanged Measurement of a Matter.

⋆ It is usually calculated in Grams ( g ) or Kilograms ( Kg )

Weight is the Force exerted on a Body by Gravity.

⋆ Weight = Mass × Gravity i.e. W = mg

⋆ Weight varies with different locations in the Universe when Different Gravitational Force applied to it.

⋆ As Mass is Constant, But Gravitational Force Varies at different Planets.

⋆ It is usually calculated in Newton ( N )

Question :

2. Why is the weight of an object on the moon = 1 / 6th its weight on the earth?

AnswEr :

⋆ Weight = Mass × Accⁿ due to Gravity of Planet

• At surface of Earth :

⇒ Weight = mg

• At surface of Moon :

⇒ Weight = mg / 6

• Acceleration due to Moon’s gravity = Acceleration due to Earth’s gravity / 6

∴ Weight on moon = 1/6 × Weight on earth

Question :

3. Define Thrust and Pressure.

AnswEr :

Thrust is a force which moves an aircraft through the air. This generally works on Isaac's Newton 2nd and 3rd laws.

⋆ It is calculated in Newton ( N ) as it is a Force.

Pressure is the force applied in perpendicular to the surface of objects per unit area.

⋆ Pressure = Force / Area

⋆ It is calculated in Pascal ( Pa )