Work Done By A Constant Force — the NEET Physics formula with its derivation, variables, validity constraints and worked solver.
Work Done by a Constant Force Valid only when the force F is constant in both magnitude and direction over the linear displacement d. For variable forces, integration (integral of F dot dx) is required. Defined as the dot product of the Force vector and Displacement vector. W = vec(F) . vec(d) Expanded using geometric definition of dot product: |F||d|cos(theta) Force magnitude F must be non-negative. Displacement magnitude d must be non-negative. Believing work is a vector quantity (it is scalar). Assuming work is always F d, ignoring the angle. Thinking work cannot be negative (it is negative when force opposes displacement).