Question

an object whose mass is 120.0 kg is located 20 m above a datum level in a location where standard gravitational acceleration exists. determine the total potential energy, in kj, of this object.

Answer 1

The total potential energy of a 120.0 kg object located 20 m above a datum level with standard gravitational acceleration is 23.544 kJ.

Step-by-step explanation:

To calculate the total potential energy of an object with a mass of 120.0 kg located 20 m above a datum level in a location where standard gravitational acceleration exists, we use the formula PE = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.81 m/s2), and h is the height in meters. In this case, the potential energy (PE) can be calculated as follows:

PE = 120.0 kg × 9.81 m/s2 × 20 m = 23544 J or 23.544 kJ

Therefore, the total potential energy of the object is 23.544 kJ.

The total potential energy can be calculated by multiplying the mass of the object (120.0 kg) by the gravitational acceleration (9.8 m/s^2) and the height (20 m above the datum level). The formula to calculate potential energy is PE = mgh, where m is the mass, g is the gravitational acceleration, and h is the height. Therefore, the total potential energy of the object is:

PE = 120.0 kg * 9.8 m/s^2 * 20 m = 23,520 J = 23.5 kJ