Question

While training for breeding season, a 380 gram male squirrel does 32 pushups in a minute, displacing itscenter of mass by a distance of 8.5 cmy for each pushup. Determine the total work done on the squirrel while moving upward (32 times).

Answer 1

10.13 J

Step-by-step explanation

Given:

• the mass of the squirrel, m = 380g = 0.38kg

,

• the distance of the pushups, d = 8.5cm = 0.085m

,

• repetitions = 32

Unknown:

• total work done by the squirrel while moving upward, W

We know that the work done by a force F during a distance d is,

`W=F\cdot d`

In this case, we can assume that the force is the gravity force,

The work done by the squirrel in one pushup is,

`W_1=F_g\cdot d=3.724N\cdot0.085m=0.31654J`

The work done for 32 pushups is,

`W=32W_1=32\cdot0.31654J\approx10.13J`

Rounded to the nearest hundredth, it is 10.13 J.