The 5.5-Mg humpback whale is stuck

The 5.5-Mg humpback whale is stuck on the there due to changes in the tide. In an effort to rescue a whale, 12-Mg tugboat is used to pull it fee using an inextensible rope tied to its tail. To overcome the frictional force of the sand on the whale, the tug backs up so that the rope becomes slack and then the tug proceeds forward at 3 m/s. If the tug then turns the engines off, determine the average frictional force F on the whale if hiding occurs for 1.5 s before the tug stops after the rope becomes taut. Also, what is the average force on the rope during the tow?


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