How to calculate total work?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
To calculate total work when multiple forces act:
- Method 1: Find net force (ΣF), then W_total = F_net × d × cos(θ)
- Method 2: Calculate work by each force separately, then sum: W_total = W₁ + W₂ + W₃ + ...
- Method 3: Use Work-Energy Theorem: W_total = ΔKE
Example: If gravity does -50J and applied force does +80J, total work = 30J.
Suggested Q&A
General · Class 12- GeneralClass 12Electric Field at Centre of Ring with Non-Uniform Charge Distribution. Four quadrants carry linear charge densities: +2λ, −2λ, +λ, −λ. Find electric field at centre.
- GeneralClass 12P°(hexane) = 408 Torr, P°(heptane) = 141 Torr. x(hexane) = 0.300. Find Y₆ and Y₇.
- GeneralClass 122N₂O₅(g) → 4NO₂(g) + O₂(g). Initial P = 50 mmHg; P at 30 min = 87.5 mmHg. Find P at 60 min.
- GeneralClass 12What is the difference between psychosis and neurosis?
- GeneralClass 12What is the difference between prism and a pyramid?
- GeneralClass 12What is the difference between phrase and clause?