Rope brake dynamometer consists of a rope wound round the rim of the pulley fixed to the shaft of the engine whose torque is to be measured. The upper end of the rope is attached with a spring balance of stiffness S and lower end of the rope is attached with a load W as shown in Figure 18.14. If the diameters of pulley and ropes be D and d, respectively, the torque can be measured as
Figure 18.14 Rope Brake Dynamometer
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