What is the potential energy of a 1.0 kg mass 1.0 m above the ground?

Question

What is the potential energy of a 1.0 kg mass 1.0 m above the ground?

2 Answers

Impact of this question

11455 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-03-26T19:21:19

$P E = - 9.81 N$ $PE = -9.81 N$

Explanation:

Potential Energy based upon the gravitational force in calculated by the equation

$P E = m g h$ $PE = mgh$

Where
PE = Potential Energy in Newtons $(N = k g \cdot \frac{m^{2}}{s^{2}})$ $(N = kg*m^2/s^2)$
m = mass in kilograms $(k g)$ $(kg)$
g = gravitational acceleration $- 9.81 \frac{m}{s^{2}}$ $-9.81 m/s^2$
h = height of the object in meters $(m)$ $(m)$

$P E = ?$ $PE = ?$
$m = 1.0 k g$ $m = 1.0kg$
$g = - 9.81 \frac{m}{s^{2}}$ $g = -9.81 m/s^2$
$h = 1.0 m$ $h = 1.0m$

$P E = (1.0 k g) (- 9.81 \frac{m}{s^{2}}) (1.0 m)$ $PE = (1.0kg)(-9.81 m/s^2)(1.0m)$

$P E = - 9.81 k g \cdot \frac{m^{2}}{s^{2}}$ $PE = -9.81 kg*m^2/s^2$

$P E = - 9.81 N$ $PE = -9.81 N$

Answer 2 · 2017-03-26T19:37:04

it depends on what number you have for g

Explanation:

With the method we use in school (In Joules):

Potential energy -> U
U = $m \cdot g \cdot h$ $m * g * h$
m <- mass of the object
g <- acceleration of gravity
h <- height of the object

if your teacher says g= 9.8 m/ $s^{2}$ $s^2$
then
U = $1 \cdot 9.8 \cdot 1$ $1 * 9.8 * 1$
U = 9.8 J

if your teacher says g=10 m/ $s^{2}$ $s^2$
then
U = $1 \cdot 10 \cdot 1$ $1 * 10 * 1$
U = 10 J

Science

Math

Humanities

... and beyond

What is the potential energy of a 1.0 kg mass 1.0 m above the ground?

2 Answers

Explanation:

Explanation:

Related questions

Impact of this question