The diagram represents a barrel with weight $1.0 \times 10^3\,\text{N}$ on a frictionless slope that is inclined at $30^\circ$ to the horizontal. A force is used to move the barrel up the slope at constant speed. This force acts parallel to the slope. What is the work done in moving the barrel through a distance of $5.0\,\text{m}$ up the slope?
- A$2.5 \times 10^3\,\text{J}$
- B$4.3 \times 10^3\,\text{J}$
- C$5.0 \times 10^3\,\text{J}$
- D$1.0 \times 10^4\,\text{J}$