Question

There is a elephant shaped weather vane at the top of a corn dryer tower that is 45 m high. If the weather vane weighs 190 N, what is the Potential Energy that the wether vane has?

Answer 1

Potential Energy = 8550 Joules

Explanation:

The potential energy of the body is the energy possessed by it due to its position therefore:

Potential energy = mgh

m = mass of the body measured in kg

g= acceleration due to gravity

h= height or distance measured in meters

But in the question asked we are not given mass but weight so

w= mg measured in newtons

We have

w= 190 N

h= 45m

PE= mgh

PE = w h= 190 * 45 = 8550 J

The unit of energy is Joule.