For a given condition above, use the concept of equal moments. Moment is the product of the force and its distance from a reference point. Let x be the distance of the 25 kg body from the fulcrum and 3 - x be the distance of the right mass, 15 kg, from the fulcrum. Equating the moments give,
(25 kg)(9.8 m/s²)(x) = (15 kg)(9.8 m/s²)(3 - x)
The value of x is 1.125 m. Therefore, the fulcrum should be 1.875 m from the right mass.
The distance between the charge and the source of the electric field is 2.2 m.
<h3>Relationship between potential energy and Distance:</h3>
The distance of charge from the source is directly proportional to the potential energy.
Where,
- distance
- potential energy = 75 J
- Electric field =
- charge =
Put the values in the formula,
Therefore, the distance between the charge and the source of the electric field is 2.2 m.
Learn more about the Electric field:
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