Question

Muscular force is a type of which of the following forces?
${\text{A}}{\text{.}}$ Gravitational force
${\text{B}}{\text{.}}$ Contact force
${\text{C}}{\text{.}}$ Non-contact force
${\text{D}}{\text{.}}$ Frictional force

Answer 1

Hint: Here, we will proceed by defining the term force and then we will discuss it. Then, we will see how many types of forces are present in nature based on their applications and from there we will find under which category muscular force lies.

Complete step-by-step answer:

In science, force is defined as the push or pull on an object with mass that causes it to change velocity (to accelerate). Force represents a vector, which means it has both magnitude and direction.

The value of the force applied to any object of mass m and having an acceleration a is given by
F = m$ \times $a

There are two types of forces based on their applications which are contact force and non-contact force.

Contact force: The force that is applied by objects in contact with each other is known as contact force. Contact force acts on a point of direct contact between the two objects. This force can either be continuous as a continuous force or can be momentary in the form of an impulse. Muscular force and frictional force both are contact forces because both types of these forces require contact between the two objects.

Non-Contact Force: Non-contact forces come into picture when objects do not have physical contact between them or when a force is applied without any interaction. When compared to the types of contact forces, there are very few non-contact forces. Gravitational force and electrostatic forces come under non-contact forces.

Therefore, muscular force is a type of contact force.

Hence, option B is correct.

Note: The S.I units of force is newton or joule per metre. Other units of force include dyne, kilopond, pound-force, etc. In nature, the fundamental forces which are present can be referred to as gravitational force, weak nuclear force, strong nuclear force, electromagnetic force and residual force.