Q:
# How many joules of work are needed to lift a 15 kilogram mass 3 meters off the ground?

**To move a 15-kilogram object 3 meters off the ground, 441 joules of work are required.** Work, as defined by the Franciscan University of Steubenville, is the product of the force needed to move an object and the distance moved.

The object has a mass of 15 kilograms. Therefore, it weighs 147 newtons on Earth, where gravitational acceleration is 9.8 meters per second per second. To counteract gravity, the acting force needs to be at least 147 newtons, It has to move 3 meters upward. When multiplying force by distance, the product comes to 441 joules, where joules are the standard unit of work.

Learn more about Motion & Mechanics-
Q:
## How do you make a pulley?

A: To make a simple pulley, stick wire through an empty thread spool such that the spool can spin freely and attach the wire to a stationary object, then tie ... Full Answer >Filed Under: -
Q:
## What is the parallel axis theorem?

A: The parallel axis theorem states that the "moment of inertia of any object about an axis through its center of mass is the minimum moment of inertia for an... Full Answer >Filed Under: -
Q:
## What is the relationship between mass and inertia?

A: Inertia is the quality a mass, or any object, has that keeps it still, if it is not moving, or in motion, if it is in motion. The relationship between mass... Full Answer >Filed Under: -
Q:
## What is the relationship between weight and mass?

A: Mass is the measurement of the amount of matter that an object contains, while weight represents the gravitational pull on a mass. Physicists calculate the... Full Answer >Filed Under: