Calculate the force to be applied at C to just raise load W= 20 kgf, neglecting weght of the pulley $P_{1}$ and friction.

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Solution

Since the system has one movable pulley its mechanical advantage is 2
As mechanical advantage = loadeffort,
effort = loadmechanicaladvantage=202=10 kgf

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Calculate the force to be applied at C to just raise load W= 20 kgf, neglecting weght of the pulley P1 and friction.

Since the system has one movable pulley its mechanical advantage is 2As mechanical advantage = loadeffortloadeffort, effort = loadmechanicaladvantage=202=10loadmechanicaladvantage=202=10 kgf

Calculate the force to be applied at C to just raise load W= 20 kgf, neglecting weght of the pulley $P_{1}$ and friction.

Since the system has one movable pulley its mechanical advantage is 2
As mechanical advantage = loadeffort,
effort = loadmechanicaladvantage=202=10 kgf