Question

1.96 into 10 raise to power 4 joule of energy were used to raise a 40 KG boy above the ground how much height would he be raised ...

answer fast yll...

Answer 1

Given:-

• Energy required to raise the boy(E) = $\sf{1.96 \times {10}^{4}}$ Juole.
• Mass of boy (m) = 40kg

To find:-

• How much would the boy be raised above the ground (h)

Answer:-

We know,

$\sf {E = mgh}$ [where E = Potential energy, m = mass of the object, g = gravitational field.]

=> $\sf {h = \dfrac{E}{mg}}$

=> $\sf {h = \dfrac{1.96 \times {10}^{4}Juoles}{40kg \times 9.8 m/{s}^{2}}}$

=> $\sf {h = 50m}$

Therefore the boy was raised to the height of 50m.

More to know:-

• g is denoted as gravitational field (or acceleration of gravity) which has a value of 9.8m/s² on sea level.

• Potential energy (E) is the energy which is required to raise an object above the ground.

Answer 2

Answer:

In physics, 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.

The unit for energy in the International System of Units (SI) is the $\sf\bold{Joule}$, which has the symbol $\sf\bold{J.}$

Given :

Potential energy = $\sf{1.96 \times {10}^{4}}$ Joule

Mass of Boy = $\sf{40}$ kg

Answer:

$\sf{PE=mgh}$

$\bold{h}{=}\sf\bold{\dfrac{E}{mg}}$

$\sf{h=}{\dfrac{1.96 \times{10}^{4}}{40kg\times{9.8m}{s}^{2}}$

$\sf{h=50m}$

$\bold{So} {the} {boy} {was} {raised} {to} {a} {height} {of}$ $\sf\bold\huge{50m}$