Question

define force ? Define force ​

Answer 1

$\Large{\boxed{\underline{\overline{\mathfrak{\star \: QueStiOn :- \: \star}}}}}$

❥ Define force ?

$\Large{\underline{\underline{\bf{AnSweR:-}}}}$

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$\Large{\underline{\underline{\bf{Force :-}}}}$

✒ A force involves an interaction between two or more objects, and it causes a push or pull between the objects are known as the force .

Force is an external activity that can change position of any body.

It has a magnitude and a direction.

$\Large{\underline{\underline{\bf{Examples:-}}}}$

☞ There are many examples of forces in our everyday lives:

✒ Weight force (i.e. the weight of something).

✒ The force of a bat on the ball.

✒ The force of the hair brush on hair when it is being brushed.

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✒ The SI unit of force is Newton(N).

✒ In SI base units ↠ kg·m/s²

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➽ 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:

$\large{\boxed{\bold{F\:=\:m×\:a}}}$

Where,

❥ m ↠ mass of the body

❥ a ↠acceleration

❥ f ↠force

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☞ Extra shots :-

❥ Unit of force :-

✒ In the centimeter gram second system of unit (CGS unit) force is expressed in dyne.

✒ In the standard international system of unit (SI unit) it is expressed in Newton (N).

☞ Types of Force :-

➪ There are two types of forces based on their applications:

✒Contact Force

✒Non-Contact Force

$\huge\pink{\underline{\boxed{\mathbb{Contact force }}}}$]

✒ 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

$\huge\pink{\underline{\boxed{\mathbb{Non - Contact force }}}}$]

✒ 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

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Answer 2

$\Large{\boxed{\underline{\overline{\mathfrak{\star \: Question :- \: \star}}}}}$

Define force ?

$\huge\underline{\overline{\mid{\bold{\pink{ANSWER-}}\mid}}}$

• A push or pull acting on a body which tends to change its state of rest or of is defined as Force.

• A force has both magnitude and direction making it a vector quantity.

• A force is equal to the product of body Mass and Acceleration.

$\underline{\boxed{\textsf{F = {\textbf{ma}}}}} \qquad\qquad \bigg\lgroup\bold{Formula \ for \ Force} \bigg\rgroup$

Here,

Mass of the body = " m "

Acceleration = " a"

Force = " F "

We can even derive the relation F = ma from Newton's law of motion.

$\large{\boxed{\bold{Newton's\:Second\:Law}}}$

The rate of change of momentum of an object depends upon the direction and magnitude of applied force.

$\large{\sf{F \propto \frac{dp}{dt}}}$

$\large{\leadsto \ \sf{F \propto \frac{d(mv - mu)}{dt}}}$

$\large{\leadsto \ \sf{F = k.m \frac{d(v - u)}{dt}}}$

$\large{\leadsto \ \sf{F = k.ma}} \\ \\ \sf{[If, k = 1]}$

$\\ \huge{\leadsto \ \underline{\boxed{\sf{F = ma}}}}$

To find,

Force acting on the object

Apply the Relation,

$\huge{\sf{v = u + at}}$

Then just Put the value ,

Therefore , you got the required answer .

Well, Now

➹ What is Balanced Force?

When two forces acting on an object are equal in size but act in opposite directions, then it is defined as balanced force.

Note :-

◆ A stationary object stays still.

◆ A moving object continues to move at the same speed and in the same direction.

➹ What is unbalanced Force?

◆ When two forces acting on an object are not equal in size, we say then it is defined as unbalanced force.

Note :-

◆ Stationary object starts to move in the direction of the resultant force.

◆ A moving object changes speed and/or direction in the direction of the resultant force.

➹ More about force :-

✧･ﾟ: *✧･ﾟ:*✧･ﾟ: *✧･ﾟ:**✧･ﾟ:*

☆What is the SI unit of Force?

$\red{\bigstar}$ S. I unit of Force

$\huge\leadsto{\sf\purple{Newton\: N}}$

◆ C.G.S (centimetre gram second) unit of force is dyne.

☆ Define direction of force?

◆ The direction in Which the body is pushed or pulled is called direction of the force.

☆ What are the Basic effects of force?

$\sf\underline{\purple{\:\:\: \: \: Effects\: of\: the \: Force \:\:\:}}$

❀ A force can change the direction of a moving object.

❀ A force can change the shape and size of an

object.

❀ A force can change the speed of a moving object.

❀ A force acting on a body can change its state of motion or rest.

✧･ﾟ: *✧･ﾟ:*✧･ﾟ: *✧･ﾟ:**✧･ﾟ:*