All about Force

Force-

           Force is an external agent capable of changing the state of rest or motion of a particular body. It has a magnitude and a direction. The direction towards which the force is applied is known as the direction ofthe force and the application of force is the point where force is applied.

The Force can be measured using a spring balance. The SI unit of force is Newton(N).

Common symbols:	F→, F
SI unit:	Newton
In SI base units:	kg·m/s2
Other units:	dyne, poundal, pound-force, kip, kilo pond
Derivations from other quantities:	F = m a
Dimension:	LMT-2

Effect of Force-

In physics, motion is defined as the change in position with respect to time. In simpler words, motion refers to the movement of a body. Typically, motion can either be described as:

1. Change in speed
2. Change in direction

The Force has different effects and here are some of them.

• Force can make a body that is at rest to move.
• It can stop a moving body or slow it down.
• It can accelerate the speed of a moving body.
• It can also change the direction of a moving body along with its shape and size.

Formula for Force-

The quantity of force is expressed by the vector product of mass (m) and acceleration (a). The equation or the formula for force can mathematically be expressed in the form of:

F = ma

Where,

• m = mass
• a = acceleration

It is articulated in Newton (N) or Kgm/s2.

Acceleration a is given by

a = v/t

Where

• v = velocity
• t = time taken

So Force can be articulated as:

F = mv/t

Inertia formula is termed as p = mv which can also be articulated as Momentum.

Therefore, Force can be articulated as the rate of change of momentum.

F = p/t = dp/dt

Force formulas are beneficial in finding out the force, mass, acceleration, momentum, velocity in any given problem.

Types of Force-

There are two types of forces based on their applications:

1. Contact Force
2. Non-Contact Force

Contact Force-

Forces that act on a body either directly or through a medium are called contact forces.

Examples of contact forces are:

• Muscular Force
• Mechanical Force
• Frictional Force

We can make use of the muscular force of animals like bullocks, horses, and camels to get the activities done. The frictional force is another type of contact force, which acts between a pair of a surface in contact and tends to oppose the motion of one surface over the other.

Non-Contact Force-

Forces that act through spaces without making direct contact with the body are called non-contact forces.

Examples of non-contact forces are:

• Gravitational Force
• Electrostatic Force
• Magnetic Force

The force exerted by a magnet on other magnets is called magnetic force. Magnetic force and electrostatic force act on an object from a distance, that’s the reason they are non-contact forces. The strength of gravity is an attractive force that is exerted by the Earth on objects, which make them fall to the land. The weight of a body is the force that is pulled by the earth towards the center.