Answer :
At the top of a roller coaster there is a cabin whose mass is 100 kg at a height of 40 m and with a speed of 5 m/s, its mechanical energy becomes: 40450 J
What is mechanical energy?
Mechanical energy, also known as kinetic energy or potential energy, is the energy that an item possesses when it is in motion or the energy that an object stores due to its location. Renewable energy is also fueled by mechanical energy.
In order to efficiently create electricity or convert energy, many sources of renewable energy depend on mechanical energy.
A compressed spring, for instance, has mechanical energy in the form of potential energy, whereas a moving vehicle has mechanical energy in the form of kinetic energy.
Given that,
mass (m) = 100 kg
speed (v) = 5 m/s
height (h) = 40 m
Total mechanical energy of the roller coaster at point A
= Potential energy at point A + Kinetic energy at point A
= mgh + (1/2)mv²
= (100×9.8×40)+ [0.5×100×(5)²]
= 39200 + 1250
= 40450 J (Answer)
To know more about mechanical energy refer to:
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