A block with weight $80\,\text{N}$ is moved a distance of $60\,\text{cm}$ along a slope that makes an angle of $30^\circ$ with the horizontal. The frictional force between the block and the slope surface is $25\,\text{N}$.\n\nWhat is the work $W_g$ done against the gravitational force and the work $W_f$ done against the frictional force?
- A$W_g = 24\,\text{J}$, $W_f = 7.5\,\text{J}$
- B$W_g = 24\,\text{J}$, $W_f = 15\,\text{J}$
- C$W_g = 48\,\text{J}$, $W_f = 7.5\,\text{J}$
- D$W_g = 48\,\text{J}$, $W_f = 15\,\text{J}$