Problem 30E

a. How much work must you do to push a 10 kg block of steel across a steel table at a steady speed of 1.0 m/s for 3.0 s?

b. What is your power output while doing so?

Solution 30E

Part (a)

Step 1 of 4:

Our aim is to find the amount work we must do to push the steel block on a steel table.

The mass of the block m = 10 kg

The speed of the block v = 1 m/s

The time taken t = 3 s

The coefficient of kinetic friction (steel on steel) μk = 0.6

The acceleration due to gravity g = 9.8 m/s2