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2 years ago

10

Essam is abseiling down a steep cliff. How much gravitational potential energy does he lose for every metre he descends? His mas

s is 72kg and the gravitational field strength is 10N/kg.

2 answers:

murzikaleks [220]2 years ago

8 0

He loses 720 J for every metre he descends

$\texttt{ }$

<h3>Further explanation</h3>

<em>Let's recall </em><em>Kinetic Energy</em><em> Formula as follows:</em>

$\boxed{Ek = \frac{1}{2}mv^2}$

<em>Ek = Kinetic Energy ( Joule )</em>

<em>m = mass of the object ( kg )</em>

<em>v = speed of the object ( m/s )</em>

$\texttt{ }$

$\boxed{Ep = mgh}$

<em>Ep = Potential Energy ( Joule )</em>

<em>m = mass of the object ( kg )</em>

<em>g = gravitational acceleration ( m/s² )</em>

<em>h = height position of the object ( m )</em>

Let us now tackle the problem !

$\texttt{ }$

<u>Given:</u>

mass = m = 72 kg

gravitational field strength = g = 10 N/kg

height = h = 1 m

<u>Asked:</u>

gravitational potential energy = Ep = ?

<u>Solution:</u>

<em>We will solve this problem as follows :</em>

$Ep = m g h$

$Ep = 72 \times 10 \times 1$

$Ep = 720 \texttt{ J}$

$\texttt{ }$

<h3>Conclusion:</h3>

<em>He loses </em><em>720 J</em><em> for every metre he descends</em>

$\texttt{ }$

<h3>Learn more</h3>

Impacts of Gravity : brainly.com/question/5330244
Effect of Earth’s Gravity on Objects : brainly.com/question/8844454
The Acceleration Due To Gravity : brainly.com/question/4189441
Newton's Law of Motion: brainly.com/question/10431582
Example of Newton's Law: brainly.com/question/498822

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<h3>Answer details</h3>

Grade: High School

Subject: Physics

Chapter: Energy

Dafna11 [192]2 years ago

5 0

Answer:

720 J

Explanation:

The gravitational potential energy that Essam loses for every metre is given by:

$\Delta U=mg \Delta h$

where

m=72 kg is Essam's mass

$g=10 N/kg$ is the gravitational field strength

$\Delta h=1 m$ is the difference in height

By substituting the numbers into the formula, we find

$\Delta U=(72 kg)(10 N/kg)(1 m)=720 J$

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