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3 years ago

How high would a 75 kg hiker have to climb to increase her potention by 12000 J

Physics

1 answer:

LekaFEV [45]3 years ago

5 0

16.33m

Explanation:

Given parameters:

Mass of the hiker = 75kg

Potential energy = 12000J

Unknown:

Height = ?

Solution:

The potential energy is the energy at rest of a body.

Potential energy = mgh

m is the mass of the hiker

g is the acceleration due to gravity

h is the height

The unknown is the height;

Height = $\frac{Potential energy}{mg}$

Height = $\frac{12000}{75 x 9.8}$ = 16.33m

Learn more:

Potential energy brainly.com/question/10770261

#learnwithBrainly

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2 years ago

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3 years ago

Assuming that Albertine's mass is 60.0 kg , for what value of μk, the coefficient of kinetic friction between the chair and the

makvit [3.9K]

Answer:

$\mu_k=0.101$

Explanation:

It is given that,

Mass of Albertine, m = 60 kg

It can be assumed, the spring constant of the spring, k = 95 N/m

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A glass sits 19.8 m from her outstretched foot, h = 19.8 m

When she just reach the glass without knocking it over, a force of friction will also act on it. Using the conservation of energy for the spring mass system such that,

$\dfrac{1}{2}kx^2=\mu_k mgh$