Answer:[tex]m=10.3 kg[/tex]
Explanation:
Given
Energy expedition [tex]E=175 J/s[/tex]
Height to which bag is raised [tex]h=1.3 m[/tex]
time required [tex]t=0.75 s[/tex]
Energy Require to lift the bag [tex]E=175\times 0.75=131.25 J[/tex]
Work done to Raise the bag =Energy expend
Work done[tex]=mgh=131.25[/tex]
[tex]m=\frac{131.25}{9.8\times 1.3}[/tex]
[tex]m=10.30 kg[/tex]
