Which one of the following machines is used to lift a car to change a flat tyre?Question 8Answera.Wedgeb.Screw jackc.Claw hammerd.Ramp
Question
Which one of the following machines is used to lift a car to change a flat tyre?Question 8Answera.Wedgeb.Screw jackc.Claw hammerd.Ramp
Solution
b. Screw jack
A screw jack is a type of jack that is operated by turning a lead screw. It is commonly used to lift heavy weights such as the vehicle itself when one needs to change a tire. The mechanical advantage of a screw jack is the ratio of the distance traveled by the effort applied to the distance traveled by the load.
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