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william1690
06.11.2021 •
Mathematics
Can someone help me with this geometry
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Ответ:
3750 J
Step-by-step explanation:
We are given that
Total number of cartons=10
Height of loading dock from the side walk=1.5 m
Length of ramp=10 m
Mass of each carton=25 kg
We have to find the work done by the delivery man on the cartons to move them to the loading dock.
Work done=![Mgh](/tpl/images/0421/4781/9f04f.png)
Where M=Total mass of object
h=Height of object above the ground
g=Acceleration due to gravity=![10m/s^2](/tpl/images/0421/4781/2c8fe.png)
Total mass of cartons=M=![10\times 25=250 kg](/tpl/images/0421/4781/12d58.png)
h=1.5 m
Substitute the values then, we get
Work done=
J
Hence, the total work done by the deliverman on the cartons to move them to the loading dock=3750J