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A plane board : 600 x 75 mm hinged to the base at one end and provided with a pulley for the force at other end either with glass top or polished surface.
The upper plane : can be...
A plane board : 600 x 75 mm hinged to the base at one end and provided with a pulley for the force at other end either with glass top or polished surface.
The upper plane : can be...