Question

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.

Answer 1

C

Step-by-step 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.

Answer 2

Step-by-step explanation:

Given

mass
`m=130 kg`

Force
`F=800 N`

coefficient of static friction
`\mu _s=0.8`

coefficient of static friction
`\mu _k=0.5`

maximum Static Friction will be given by

`F_s=\mu _smg`

`F_s=0.8* 130* 10=1040 N`

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.