Givens.
• The total energy is 429.66 J.
,
• The mass of the weight is 12.60 kg.
To find the height, use the gravitational potential energy formula.
Where m = 12.60 kg, U = 429.66 J, g = 9.81 m/s^2, and solve for h.
Therefore, they can lift the weight by 3.5 meters.