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iren [92.7K]
3 years ago
11

An automobile to be transported by ship is raised 7.0 m above the dock. If its gravitational potential energy is 66,000 J, what

is the automobile’s mass
Physics
1 answer:
Inessa05 [86]3 years ago
5 0

Answer:

m = 1,347\  kg

Explanation:

<u>Gravitational Potential Energy </u>

It's the energy stored in an object because of its vertical position or height in a gravitational field.

It can be calculated with the equation:

U=m.g.h

Where:

m = mass of the object

h  = height with respect to a fixed reference

g  = acceleration of gravity, usually taken as 9.8 m/s^2.

The automobile of unknown mass is raised to a height of h=7 m above the dock, assumed as a reference. The automobile has gravitational potential energy of U=66,000 J.

Let's calculate the mass by solving for m:

\displaystyle m=\frac{U}{hg}

\displaystyle m=\frac{66,000}{5*9.8}

\displaystyle m=\frac{66,000}{49}

\mathbf{m = 1,347\  kg}

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