There is an elephant shaped weather vane at the top of a corn dryer tower that is 45 m high. If the weather vane weighs 140 N, what is the Potential Energy that the weather vane has?

If the ground level is taken as the reference energy point, that is, as the point at which the potential energy is equal to zero. We can calculate the energy potential maxima to the height where the weather vane is located.

The mass can be calculated as follows:

w = m*g

m = w /g

m = 140 / 9.81

m = 14.27[kg]

[tex]E_{p} =m*g*h\\where:\\m=mass=14.27[kg]\\g = gravity = 9.81[m/s^2]\\h = elevation = 45[m][/tex]

Now calculating the potential energy

[tex]E_{p} = 14.27*9.81*45\\E_{p} = 6300[J][/tex]

Cricetus Cricetus · Answer 2 · 2021-12-30T11:52:52+01:00

The potential energy will be "6300 J".

According to the question,

Weight, w = 140 N
Height or tower, h = 45 m

The mass will be:

→ [tex]w = m\times g[/tex]

or,

→ [tex]m = \frac{w}{g}[/tex]

By putting the values, we get

[tex]= \frac{140}{9.81}[/tex]

[tex]= 14.27 \ kg[/tex]

hence,

The potential energy will be:

→ [tex]E_p= mgh[/tex]

[tex]= 14.27\times 9.81\times 45[/tex]

[tex]= 6300 \ J[/tex]

Thus the above response is right.

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