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A stubborn 130 kg pig sits down and refuses to move. To drag the pig to the barn, the exasperated farmer ties a rope around the pig and pulls with his maximum force of 800 NN. The coefficients of friction between the pig and the ground are μs=0.80μs=0.80 and μk=0.50μk=0.50.

Respuesta :

Answer:

Explanation:

Given

mass [tex]m=130 kg[/tex]

Force [tex]F=800 N[/tex]

coefficient of static friction [tex]\mu _s=0.8[/tex]

coefficient of static friction [tex]\mu _k=0.5[/tex]

maximum Static Friction will be given by

[tex]F_s=\mu _smg[/tex]

[tex]F_s=0.8\times 130\times 10=1040 N[/tex]

initially  we need to provide a force of 1040 N to move the Pig . As soon Pig starts moving kinetic friction will come into play.

But maximum force is less than Maximum static friction force so it is impossible to move pig.

                               

Answer:

C

Explanation:

The distance that the pig moves up will be less than the distance that the strongman pulls down.

Explanation: The strongman is further from the fulcrum than the pig is, so the distance that he pulls down will be greater than the distance that the pig moves up.

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