Question

Plzzz solve it with explanation​

Answer 1

Given :-

• Mass of an object is $\bf\red{20 g}$
• Height of the body is $\bf\green{2 m}$

To Find:-

• Value of the energy

Solution:-

• ${\purple {\underline{\boxed{\sf{ Potential\: Energy \:=\: mgh}}}}}$

Where,

• $\sf\red{m}$ = Mass
• $\sf\green{g}$ = Gravity
• $\sf\blue{h}$ = Height

Now, Converting gram to kg

$\longrightarrow\:$ 1000g = 1kg

$\longrightarrow\:$ 20g = $\sf\dfrac{20}{1000}$

$\longrightarrow\:$ = 0.02 kg

According to the question:-

$\sf\red{Mass \:= \:0.02 kg}$

$\sf\green{Gravitational \;force \:= \;10 m/s^{2}}$

$\sf\purple{Height\: =\: 2 m}$

Putting these values :——

• $\to\:$ Potential Energy = mgh
• $\to\:$ Potential Energy = 0.02 × 10 × 2
• $\to\:$ Potential Energy = 0.2 × 2
• $\to\:$ Potential Energy = $\bf\pink{0.4\:joules}$

Answer 2

$\bf \underline \pink{Given}$

✭ Mass of an object is 20 g

✭ Height of the body is 2 m

$\bf \underline \pink{To \: Find}$

◈ Energy processed?

$\bf \underline \pink{Solution}$

So here the body would have Potential Energy

Potential Energy of a body is given by,

➝ Potential Energy = mgh

Where,

m = Mass

g = Gravitational Acceleration

h = Height

Now let's first convet from gram to km

➳ 1000g = 1 Kg

➳ 20g = 20/1000

➳ Mass = 0.02 kg

So now as per the question,

Mass = 0.02 kg

Gravitational acceleration = 10 m/s²

Height = 2 m

Substituting the values,

»» Pe = mgh

»» Pe = 0.02 × 10 × 2

»» Pe = 0.2 × 2

»» Pe = 0.4 J

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☯ Let's Understand

⪼ When an object is in rest that is there is no Displacement then it is called as Potential Energy

⪼ When the body is in motion or in other words there is a Displacement then it is called as Kinetic energy

⪼ And the ability to work is called as energy

⪼ Here the body is not moving but still (rest) which means it has Potential Energy

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