How much work is needed to lift a 3 kg mass a distance of 0.75 m?
E23
To calculate the amount of work needed to lift a mass, you can use the formula:
Work = force × distance
First, we need to determine the force required to lift the mass. The force can be calculated using the formula:
Force = mass × gravity
where "mass" is the mass of the object, and "gravity" is the acceleration due to gravity which is approximately 9.8 m/s² on Earth.
Let's plug in the values given in the question:
Mass = 3 kg
Distance = 0.75 m
Gravity = 9.8 m/s²
Force = 3 kg × 9.8 m/s²
Now we can calculate the force:
Force = 29.4 N
Finally, we can use the force and distance values to calculate the work:
Work = 29.4 N × 0.75 m
Therefore, the work needed to lift a 3 kg mass a distance of 0.75 m is approximately 22.05 Joules.