An object of mass 0.50 kg is transported to the surface of planet x where the object's weight is measured to be 20 n. the radius of the planet is 4.0 ´ 106 m. what free fall accerleration will the 0.5 kg object experience when at the surface of planet x. what is the mass of planet x? (g = 6.67 ´ 10-11 n × m2/kg2)
a force is a push or a pull that acts upon an object as a results of its interaction with another object. these two forces are called action and reaction forces and are the subject of newton's third law of motion. formally stated, newton's third law is: for every action, there is an equal and opposite reaction.
our weight on moon is less than it would be on earth due to a difference of the strength of gravity on the moon. the moon's gravitation force is determined by the mass and the size of the moon. since the moon has significantly less mass than the earth, it will not pull objects toward itself at the strength that earth will. this means that if you went to the moon you would weigh less, even though your mass stays the same.