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23 Nov 2019
A machine carries a 7.0 kg package from an initial position ofdi=(0.6 m)Ãi + (0.75 m)Ãj + (0.28 m)Ãk at t = 0 to a final positionof df=(7.5 m)Ãi + (15.0 m)Ãj + (7.2 m)Ãk at t = 12.0 s. Theconstant force applied by the machine on the package is F=(5.0 N)Ãi+ (6.0 N)Ãj + (10.0 N)Ãk. For that displacement, find (a) the workdone on the package by the machine's force and (b) the averagepower of the machine's force on the package.
A machine carries a 7.0 kg package from an initial position ofdi=(0.6 m)Ãi + (0.75 m)Ãj + (0.28 m)Ãk at t = 0 to a final positionof df=(7.5 m)Ãi + (15.0 m)Ãj + (7.2 m)Ãk at t = 12.0 s. Theconstant force applied by the machine on the package is F=(5.0 N)Ãi+ (6.0 N)Ãj + (10.0 N)Ãk. For that displacement, find (a) the workdone on the package by the machine's force and (b) the averagepower of the machine's force on the package.
Nestor RutherfordLv2
21 Sep 2019
