The blinds weighing 1.2 kg and length 1.6 m, when opened, are rolled into a thin roller near the top of the window.
| December 14, 2020 | education
The blinds weighing 1.2 kg and length 1.6 m, when opened, are rolled into a thin roller near the top of the window. What kind of work is done?
Given: m = 1.2 kg = 1200g
h = 1.6 m = 160cm
g = 10 m / s ^ 2
Find: A -?
Decision:
A = mhg = 1200 * 160 * 10 = 1920000J = 1920kJ.
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