Problem 16P

To keep her dog from running away while she talks to a friend, Susan pulls gently on the dog’s leash with a constant force given by . How much work does she do on the dog if its displacement is (a) , (b) ?

Solution 16P

a.)

Step 1 of 3

We have to find the work done by Susan in pulling the dog’s leash gently with a constant force to keep her dog from running away.

The work done by Susan is given by,

Where,

constant force =

displacement =

Thus,

= (2.2)

= 0.55 J

Therefore, the work done by Susan if and is 0.55 J.

b.)