physics

Ice fishing equipment weighing 3,000 N is pulled at a constant speed V = 0.5 m/s across a frozen lake by means of a
horizontal rope. If the coefficient of kinetic friction is 0.05, what is the work done (in J) by the fisherman in pulling the
equipment a distance of 500 m?

asked by Drew
  1. Just an explanation without numbers would be awesome, i just want to understand the correct steps to take.

    Thanks!

    posted by Drew
  2. W= (F(fr),s) = F(fr) •s•cosα.
    α= 0, cosα= 1
    F(fr)=μ•N=
    W= μ•mg •s = 0.05•3000•500 =

    posted by Elena
  3. thanks, but how come m is not in kg?

    posted by Drew
  4. weight= mg = 3000 N
    m= weight/g=3000/9.8 =306.12 kg

    posted by Elena

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