The lever is in balance. The lever arms are 0.1 m and 0.3 m. The force acting on the short arm is 3 N.
| June 15, 2021 | education
The lever is in balance. The lever arms are 0.1 m and 0.3 m. The force acting on the short arm is 3 N. The force acting on the long arm.
According to the balance rule of the lever:
F1 / F2 = l2 / l1, where F1 is the force acting on the long arm l1 (N); F2 is the force acting on the short arm l2 (F2 = 3 N); l1, l2 – lever arms (l1 = 0.3 cm, l2 = 0.1 cm).
Let us express and calculate the force acting on the long arm of the lever:
F1 = (F2 * l2) / l1 = (3 * 0.1) / 0.3 = 0.3 / 0.3 = 1 N.
Answer: The force acting on the long arm of the lever is 1 N.
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