Question

In CGS, the gravitational unit of force is
A) ${\rm{kgf}}$
B) $N$
C) ${\rm{gf}}$
D) ${\rm{dyne}}$

Answer 1

Hint: his question is based on the measurement system. The question is based on the CGS system, CGS means centimeter gram second. The measurement system tells us about how much amount or quantity of matter, force and many other physical quantities are present.

Complete step by step answer:
We know that the measurement system is the collection of different units. These units are different for different areas and locations. There are various systems that we can use in our daily life. Some are metric system, International system (SI), imperial system and the United States customary system.
We know that the gravitation is the type force that acts on the Earth’s crust. We can say that the force is acting on the object, when the object experiences a change in location, shape and size. Therefore, force is directly related to the mass and acceleration of the object.
Consider the formula of force is given as,
$F = ma$
Now we can find the international unit of force is Newton while in CGS, it is dyne.
We know that the gravitational force is also a kind of force. It is attractive in nature because when the body is in the air, the body experiences an attractive force. So, it has the same unit that of force, because gravitation is also the force.

Therefore, the unit of gravitation in the CGS system is ${\rm{dyne}}$.

Note:In this question, students have knowledge of measurement systems and types of units. The other unit such as Newton is the MKS unit of force. Kgf is known as kilogram force is the non standard gravitational metric unit, which is equal to \[9.8\;{\rm{N}}\].