A wheelbarrow weighs 20 kg when empty. A 600 N load is carried using it. The load is concentrated at a point which horizontally is 50 cm away from the wheel. The wheelbarrow, which is 2m long, has also its center of mass at this point. How much easier do we lift the load instead of carrying it on shoulders? (Take the gravity equal to 10 m/s2 if needed)
A. 4 times easier
B. 3 times easier
C. 1.5 times easier
