A worker is selecting one of four levers to lift a heavy concrete block. To minimise the required effort as much as possible, which lever should the worker select?

Subject: General Awareness | Topic: Science | Difficulty: MEDIUM

Options

1. (A) Effort arm = 50 cm, load arm = 25 cm
2. (B) Effort arm = 40 cm, load arm = 10 cm
3. (C) Effort arm = 20 cm, load arm = 20 cm
4. (D) Effort arm = 30 cm, load arm = 15 cm

Verified Answer

Option (B): Effort arm = 40 cm, load arm = 10 cm

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