What is the mass in kg of a 3920 N piano ?

mass = weight / g

To find the mass in kilograms (kg) of a piano with a weight of 3920 Newtons (N), we can use the formula:

Weight = Mass × Acceleration due to gravity

The standard value for acceleration due to gravity on Earth is approximately 9.8 m/s^2.

Rearranging the formula, we get:

Mass = Weight / Acceleration due to gravity

Substituting the given values:

Mass = 3920 N / (9.8 m/s^2)

Mass = 400 kg

Therefore, the mass of the piano is 400 kg.