Question

A box of weight 100 N is lifted to a height of 10 m above ground. How much potential energy will be stored in the box?
9800 J
1000 J
2000 J
none of the above


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Answer 1

$\huge\mathtt \red{A} \blue{n} \pink{s} \purple{w} \blue{e} \orange{r}$

Weight = 100 N

Height = 10 m

$\large{\underline{\underline{\sf{ \maltese \: {To \: Find:-}}}}}$

Potential energy = ?

✠Solution:−

➊ We know that:–

\qquad \bull \bf \: {Weight = Mass \times Acceleration }∙Weight=Mass×Acceleration

\begin{gathered}\begin{gathered}\begin{gathered}\qquad \quad {:} \longrightarrow\sf \: {100 = mass \times 10 } \\\end{gathered}\end{gathered} \end{gathered}

:⟶100=mass×10

\begin{gathered}\begin{gathered}\begin{gathered}\qquad \quad {:} \longrightarrow\sf \: { \dfrac{100}{10} = mass } \\\end{gathered}\end{gathered} \end{gathered}

:⟶ 10100 =mass

\begin{gathered}\begin{gathered}\begin{gathered}\qquad \quad {:} \longrightarrow\sf \: { mass = \cancel\dfrac{100}{10} } \\\end{gathered}\end{gathered} \end{gathered}

:⟶mass= 10100

\begin{gathered}\begin{gathered}\begin{gathered}\qquad \quad {:} \longrightarrow\sf \: \underline{ \boxed {\sf{mass = 10 \: kg }}} \\\end{gathered}\end{gathered} \end{gathered}

:⟶

mass=10kg

➋ We know that:–

\qquad \bull \bf \: { Potential \: energy=mass \times acceleration \times height}∙Potentialenergy=mass×acceleration×height

\begin{gathered}\begin{gathered}\begin{gathered}\qquad \quad {:} \longrightarrow\sf \: {potential \: energy = 10 \times 10 \times 10 } \\\end{gathered}\end{gathered} \end{gathered}

:⟶potentialenergy=10×10×10

\begin{gathered}\begin{gathered}\begin{gathered}\qquad \quad {:} \longrightarrow \underline{ \boxed{\sf \: {potential \: energy = 1000 \: J}}} \\\end{gathered}\end{gathered} \end{gathered}

:⟶ potentialenergy=1000J

\begin{gathered}\begin{gathered}\begin{gathered}\large \quad \therefore\sf \: { The \: correct \: option \: is \: \underline{\underline{1000 \: J}}} \\\end{gathered}\end{gathered} \end{gathered}

∴Thecorrectoptionis \: 1000j

\large{\underline{\underline{\sf{ \maltese \: {Answer:-}}}}}

✠Answer:−

The potential energy is 1000 J.

I hope it is helpful it is helpful for you

@ Aman jha

Answer 2

Question

A box of weight 100 N is lifted to a height of 10 m above ground. How much potential energy will be stored in the box?

Given

Force= 100 N

height= 10 m

gravity= 10 m/sec²

To Find

calculate the potential energy

Formula used

f = m.a

p.e. = m×g×h

Solution

❐According to second law of motion:

f = m.a

put the value in the above formula to get the mass

➯100 = mass x 10

➯mass = 100/10

➯mass = 10 kg

❐ Potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.

p.e. = m×g×h

where

m= mass

g= gravity

h= height

put the value in the above formula

➯potential energy= 10 x 10 x 10

➯ potential energy= 1000 Joule

therefore potential energy is 1000 J....