Given, m=1‌kg ‌|F1|=4N ‌|F2|=4N From the figure, angle between force, F1 and F2,θ=60∘ ∵ Magnitude of resultant force, F‌=√F12+F22+2F1F2‌cos‌θ ‌=√42+42+2×4×4×cos‌60∘. ‌=√16+16+16=4√3N Magnitude of acceleration of the object a‌=‌