Question

Explain force??????please please

Answer 1

⭐Force can be defined as any push or a pull that changes/tends to change

➡ the state of rest or of uniform motion of an object or

➡ changes the direction or

➡ shape of an object.

⭐It causes objects to accelerate.

⭐In SI base units:- kg·m/s2

⭐Unit S.I = Newton

⭐Force intuitively described as a push or a pull.

⭐ A force has both magnitude and direction.


⭐ it a vector quantity.

⭐It changes speed of moving object or directions or can deform its shape of can change the direction of object.

⭐It can be contact or non-contact

Answer 2

" $\ \ \ \ \ \huge \mathfrak{ \pmb{ \colorbox{lavender}{ \: \: \: \: \: \: \red F \: \blue O \: \green R \: \purple C \: \orange E \: \ \ \ \ \: }}}$ "

• Force is push or pull acting on a body which tends to change its state of rest or of motion. It is denoted by "F". It has a magnitude and a direction.

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$\large \red{\bold{Formula \ for \ Force \: : - } }$

$\huge\underline{\boxed{\textrm{F = {\texttt{ma}}}}}$

Here,

• " m " = Mass of the body
• " a " = Acceleration
• " F " = Force

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Derivation of Force [ F = ma ] using Newton's law of motion.

$\begin{gathered}\small{\bold{Newton's\:Second\:Law \ states \ that \ :-}}\\ \tiny \: \tt \: The \: rate \: of change \: of \: momentum \: of \: an \: object \\ \tiny \tt depends \: upon \: the \: direction \: and \: magnitude \: of \: applied \: force.\end{gathered}$

• $\blue{\large{\bf{F \propto \cfrac{dp}{dt}}} }$

• $\blue{\large{ \ \bf{F \propto \cfrac{d(mv - mu)}{dt}}} }$
• $\blue{\large{ \ \bf{F = k.m \cfrac{d(v - u)}{dt}}} }$

• $\blue{\large{\ \bf{F = k.ma}} \quad \quad \: \: \: \tt{[If, k = 1]}}$

$\blue{\large{\leadsto \underline{\boxed{\bf{ \pmb{F = ma}}}}}}$

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Unit of Force :-

• SI unit of force is Newton(N).
• C.G.S (centimetre gram second) unit of force is Dyne.

Effects of force -

• Force can change the direction of a moving object.
• Force can change the shape and size of an object.
• Force can change the speed of a moving object.
• Force can change a body′s state of motion or rest.

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