Net torque(τnet) aboutB is zero at equilibrium
TA×100−mg×50−2mg×25=0
TA×100=100×mg
∴TA=1mg.
Shown in the figure is rigid and uniform one meter long rod AB held in horizontal position by two strings tied to its ends and attached to the…
JEE Main 2020 — Physics Mechanics
2020mcqmedium
Shown in the figure is rigid and uniform one meter long rod AB held in horizontal position by two strings tied to its ends and attached to the ceiling. The rod is off mass ′m′ and has another weight of mass 2m hung at a distance of 75cm from A. The tension in the string at A is:
Official previous-year question
Held on 2 Sept 2020 · Verified 6 Jul 2026.
Options
- A
0.5mg
- B
2mg
- C
0.75mg
- D
1mg
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