You measure that an object has a mass of exactly 1 kg by weighing it in the Earth's gravitational field. The equivalence principle says that the mass you would measure by trying to accelerate it would be:
A) 1 kg
B) greater than 1 kg
C) less than 1 kg
D) different from 1kg, depending on what it's made of
E) larger than 1 kg because of the Sun's gravity

Question

Quizplus · Accepted Answer

The equivalence principle states that the gravitational mass and the inertial mass of an object are equivalent. This means that the mass measured by weighing an object in a gravitational field (gravitational mass) is the same as the mass measured by trying to accelerate the same object (inertial mass). Therefore, the mass measured by trying to accelerate the object would also be 1 kg.

You Measure That an Object Has a Mass of Exactly