A block on a smooth horizontal surface is pulled a distance d d\,d by a constant force F F\,F acting at an angle θ \theta\,θ to the horizontal, as shown in the diagram below.
Which of the following scenarios results in the most work done on the block by the pulling force?
F=50 NF = 50\text{ N}F=50 N, θ=30∘\theta = 30^\circθ=30∘, d=8 md = 8\text{ m}d=8 m
F=60 NF = 60\text{ N}F=60 N, θ=45∘\theta = 45^\circθ=45∘, d=9 md = 9\text{ m}d=9 m
F=36 NF = 36\text{ N}F=36 N, θ=0∘\theta = 0^\circθ=0∘, d=10 md = 10\text{ m}d=10 m
F=75 NF = 75\text{ N}F=75 N, θ=60∘\theta = 60^\circθ=60∘, d=10 md = 10\text{ m}d=10 m