What is the effect of gravity on a one-kilogram mass at Earth's surface?

The effect of gravity on a one-kilogram mass at Earth's surface can be quantified by using the formula for weight, which is the force experienced by an object due to gravity. This is calculated by multiplying the mass of the object by the acceleration due to gravity, which on Earth's surface is approximately 9.81 m/s².

For a one-kilogram mass, the weight would therefore be calculated as follows:

Weight = mass × gravity

Weight = 1 kg × 9.81 m/s² = 9.81 N.

This means that a one-kilogram mass will exert a gravitational force of 9.81 Newtons at the Earth's surface. This understanding is fundamental in power engineering, as it relates to how forces and loads are calculated in various systems.

The other options represent approximate weights for different scenarios or incorrect approximations of gravitational force. They do not depict the accurate calculation based on Earth's gravitational constant for a one-kilogram mass.