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It is recommended to use a counterweight of ≤5 kg. When using a 5 kg counterweight, the lever arm should be installed within the range of 20 cm to 30 cm.For counterweights of other masses, the installation position can be calculated as follows:Assume the counterweight mass is m kg. The allowable lever arm length L is defined by: 10 N·m ≤ m × g × L ≤ 15 N·mwhere g = 9.8 m/s2, which can be approximated as 10 m/s2. For example, if a 2 kg counterweight is used, the allowable range of L is from 10 N·m / (2 × 10 m/s2) = 0.5 m to 15 N·m / (2 × 10 m/s2) = 0.75 m.
