3. The gravitationalforce between two objects can be calculated usingthe formula F = G * (m1 * m2) / r^2, where G is the gravitational constant and r is the distancebetween the objects.
两个物体之间的引力可以通过公式F = G * (m1 * m2) / r^2来计算,其中G是万有引力常数,r是两个物体之间的距离。