Question

explain screw jack self locking condition is achieved? is it advantages?​

Answer 1

Answer:

Explanation:

Compared with some other types of jack,the Worm gear machine screw jack has an important advantage that is it is self-locking, which means when the rotational force on the screw is removed, it will remain motionless where it was left and will not rotate backwards, regardless of how much load it is supporting.