Question

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Answer 1

Answer:

1. The velocity ratio of simple screw jack is 62.857

2. Mechanical advantage is the force the jack exerts on the load. ... The screw jack consists of two simple machines in series; the long operating handle serves as a lever whose output force turns the screw. So the mechanical advantage is increased by a longer handle as well as a finer screw thread.

Answer 2

Answer:

your answer is in the attachment