Answer:
To calculate Mar's power, we can use the formula:
Power = Work / Time
First, let's calculate the work done by Mar in lifting the mango crane. The work done is equal to the force exerted multiplied by the distance moved in the direction of the force.
Given:
Force (F) = Mass x Gravity
Mass = 15 kg
Gravity = 9.81 m/s² (acceleration due to gravity)
Distance (d) = Height = 2.3 m
Time (t) = 12 seconds
Now, let's calculate the force:
Force (F) = Mass x Gravity
F = 15 kg x 9.81 m/s²
F = 147.15 N
Next, let's calculate the work done:
Work = Force x Distance
Work = 147.15 N x 2.3 m
Work = 338.145 J
Now, let's calculate the power:
Power = Work / Time
Power = 338.145 J / 12 s
Power ≈ 28.179 W
Therefore, the power of Mar in lifting the 15-kg mango crane to a height of 2.3 m in 12 seconds is approximately 28.179 Watts.