Initial data: m (weight of the body in question) = 200 g (0.2 kg); En (potential energy possessed by the body) = 98 J.
Reference data: g (acceleration due to gravity) = 9.8 m / s2.
The height at which the body under consideration should be located can be expressed from the formula: En = m * g * h, whence h = En / (m * g).
Calculation: h = 98 / (0.2 * 9.8) = 50 m.
Answer: The body should be at a height of 50 meters.
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