41. In general the more sheaves in the blocks that make up a tackle, the higher its mechanical advantage . 42. This method can tighten the sprocket to very high torque because of high mechanical advantage created by the wheel. 43. With the engine off, this brake band acting on the rear unit ring gear had a tremendous mechanical advantage . 44. The crank is geared to give a negative mechanical advantage so that it can crank the machine at high speed. 45. Extensive use of leverage also plays a critical role by providing a mechanical advantage and reducing the use of force. 46. It is seen as part of a larger effort by athletes in many sports to gain mechanical advantage in competition. 47. The mechanical advantage of a wedge is given by the ratio of the length of its slope to its width. 48. Such screw jack type operation provided enough mechanical advantage for rams to overcome downhole pressures and seal the wellbore annulus. 49. Some blocks are used to increase mechanical advantage and others are used simply to change the direction of a line. 50. The assumption of constant power thus allows use of the speed ratio to determine the maximum value for the mechanical advantage .
