A uniform bar is pivoted at its left end. Four equal-magnitude forces act simultaneously as follows:
1. F at 0.10m making 90∘ with the bar
2. F at 0.20m making 45∘ with the bar
3. F at 0.30m along the bar
4. F at 0.40m making 30∘ with the bar
Rank the torques produced (largest to smallest).
a) 1>2>4>3
b) 4>3>2>1
c) 4>2>1>3
d) 3>4>2>1