Mechanical advantage device advantage for a screw can be calculated using the following equation: where Note that the actual mechanical advantage of a screw "system" is greater, as a screwdriver or other screw driving system has a mechanical advantage as well. Mechanical advantage device A simple machine that exhibits mechanical advantage is called a mechanical advantage device - e.g.: Consider lifting a weight with rope and pulleys. A rope looped through a pulley attached to a fixed spot, e.g. a barn roof rafter, and attached to the weight is called a "single pulley". It has a mechanical advantage (MA) = 1 (assuming frictionless
Hook Estate and Kennels and grassland (c.1931), purchased by the Greyhound Racing Association (GRA), soon after the first oval track racing arrived in the United Kingdom. The kennels were located on what was formerly Hook Farm, south of Hook Wood. The mansion 'Hook House' or 'The Hook' served as a base for some of the senior staff including the kennel manager and veterinary surgeon and the Hook Cottages and newly built Hook villas were divided among the trainers and their families attached to the GRA's racetracks. The kennels opened with 150 employees and there was a separate kennel block for each of the original