A liter glass jar is raised above the floor level to a height of 1.5 m. What work has been done in this case?

Initial data: h (the height to which the liter glass jar was raised) = 1.5 m.

Reference values: g (acceleration due to gravity) = 10 m / s2; by the condition ρ (glass density) = 2500 kg / m3.

1) Since the volume of glass in the jar is unknown, we will use GOST 5717, which indicates that the recommended weight of 1000 jars with a capacity of 1000 cm3 (1 liter) is 41 kg. Therefore, m = 41/100 = 0.41 kg.

2) Determine the potential energy of a glass jar: En = m * g * h = 0.41 * 10 * 1.5 = 6.15 J.