A tow truck is using a cable to pull a shipping container of mass m =1000 kg acr

Question

A tow truck is using a cable to pull a shipping container of mass m =1000 kg across a
horizontal surface as shown in the figure. The cable is attached to the container at the front
bottom corner and makes an angle ? =55
with the vertical as shown. The coefficient of
kinetic friction between the surface and the crate is µk = 0.2.

a. Draw a free-body diagram for the container.
b. Assuming that the truck pulls the container at a constant speed, Calculate the
magnitude T of the string tension in the cable

Explanation / Answer

For your fbd: you have to make your diagram around a single point. the point where all the reactions take place. friction always acts opposite to motion. Motion is to the left as is the tension. your force of friction =Uk*N. N is your normal force and it is upward. in your fbd, you have to make tension a force in the y and x direction Tsin55 and Txcos55 for the y direction and x direction respectively

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