Gravitational Field Strength Worksheet Gravitational Field Strength Worksheet Gravitational field strength is a measure of the force of gravity acting on an object per kilogram of its mass. It tells us how strong gravity is at a particular location. Print Equation flash card Gravitational Field Strength Worksheet Practice working out the gravitational field strength in this worksheet. Answers below. Click to reveal answers Question Answer 1 600 N 2 1.67 N/kg 3 73 kg Need more practice? Click here to learn more.