Mechanical advantage force applied at "A" the end of the rope, and let "F" be the force at "B" on the moving block. Like the velocities "F" is directed downwards and "F" is directed upwards. For an ideal block and tackle system there is no friction in the pulleys and no deflection or wear in the rope, which means the power input by the applied force "F""V" must equal the power out acting on the load "F""V", that is The ratio of the output force to the input force is the mechanical advantage of an ideal gun tackle system, This analysis generalizes
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