When a force $\underline{F}=3\underline{i}+2\underli… |

When a force $\underline{F}=3\underline{i}+2\underline{j}-4\underline{k}$ is applied to an object a displacement $\underline{d}=4\underline{i}+\alpha\underline{j}+4\underline{k}$ occurred. For what value of $\alpha$ would the work done be 6 units?