Lesson: The Relationship between Mass and Weight
In this lesson, we will learn how to apply Newton's second law of motion to define gravitational field strength as the force acting on an object per kilogram of its mass.
Sample Question Videos
Worksheet: 8 Questions • 4 Videos
An astronaut who has a mass of 81.25 kg goes to the Moon, where the acceleration due to gravity is 1.6 m/s2. What force does the astronaut’s weight apply to the lunar surface beneath the astronaut’s feet?
An astronaut who has a mass of 80 kg goes to Mars. On Mars, the astronaut applies a force of 296 N to the ground beneath her due to her weight. What is the acceleration due to gravity at the surface of Mars?
The gravitational field strength of a planet becomes weaker as the distance from the planet’s surface increases. Several thousand kilometers above a planet, its gravitational field strength is 2.4 N/kg. What force, in kilonewtons, toward the planet’s surface is experienced by a spacecraft with a mass of 25 000 kg?