Question

Assertion: - The SI unit of weight is Newton.
Reason: - Weight is the force of gravity with which a body is attracted towards the earth.
A) Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
B) Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
C) Assertion is correct but Reason is incorrect.
D) Assertion is incorrect but Reason is correct.

Answer 1

Hint: Weight is a vector, and also, force is a vector term. The weight W of an object is the magnitude of the gravitational force on the object. Weight is a force that operates at all times on all objects closer to the Earth. The Earth brings on all objects with a gravitational force downward via the centre of the Earth.

Complete step-by-step solution:
Weight is a vector term, the gravitational force operating on the object. The magnitude of the response force exerted on an object by mechanisms that hinder the forces of gravity: the weight is the quantity estimated by, for instance, a spring scale. Thus, in the case of free fall, the weight would be nothing. In this understanding of weight, terrestrial things can be weightless: neglecting air resistance, the famous apple dropping from the tree would be weightless.
The unit of estimation for weight is force, which is the newton. For example, an article with a mass of one-kilogram weighs about $9.8$ newtons on Earth's surface and about one-sixth as much on the Moon. Although weight and mass are reliably different quantities, the terms are frequently confused with each other in common use.
Weight is described as the force applied to a body by gravity.
$ W = mg$,
Where, W is the weight,
m is the object's mass, and
g is the gravitational acceleration.
The weight indicates a quantity of the exact nature as a force, and it is equal to the multiplication of the mass and the acceleration due to gravity (g).
Option (a) is correct.

Note: Weight is different from mass because weight is equal to the force of gravity, and mass measures the object's inertia. They are linked since higher masses will have higher weights. The object's weight will change if the object is taken farther away from Earth or located on a separate planet since the gravity force on the object will vary. However, the object's mass will remain the same despite whether the object is located on Earth, in external space, or on the Moon.