Question

a student wants to know the gravitational force between a building and a water drop. they know the mass of the water drop, the distance between them, and the gravitational constant, g. what else do they need to know? the mass of the building how high the water drop is if the building is magnetic the wind velocity

Explanation:

To calculate the gravitational force between two objects, we use Newton's law of universal gravitation, which is given by the formula \( F = G\frac{m_1m_2}{r^2} \), where \( F \) is the gravitational force, \( G \) is the gravitational constant, \( m_1 \) and \( m_2 \) are the masses of the two objects, and \( r \) is the distance between their centers of mass. In this problem, we know the mass of the water drop (\( m_1 \)), the distance between them (\( r \)), and the gravitational constant (\( G \)). To find the gravitational force between the building and the water drop, we still need the mass of the building (\( m_2 \)). The height of the water drop, whether the building is magnetic, and the wind velocity are not relevant to the calculation of gravitational force using this law.

Answer:

the mass of the building