how does a screw Jack work

Open in App

Solution

Dear student,
A screw is like an inclined plane spiraled on a cylindrical rod. We know an inclined plane can be used to lift objects. In the same way, a screw when pressed and rotated can be moved up or down. In a screw jack, the screw is rotated and the metal part resting on the thread (spiraled inclined plane on the cylindrical rod) moves up or down. Thus, a screw jack works on the principle of a screw. However, in screw jack, the screw only rotates but doesn't move up or down.
Regards

Suggest Corrections

Similar questions

Q. Why is a jack screw provided with a long arm?

On what principle does the screw gauge work?

A jack screw is provided with a long arm. Explain why ?

Q. A screw factory has two machines, the M1, which is old, and does

75 %

of all the screws, and the M2, newer but small, that does

25 %

of the screws. The M1 does

4 %

of defective screws, while the M2 just does

2 %

of defective screws. If we choose a screw at random: what is the probability that it turns out to be defective?

A machine manufactures 23875 screws per day. How many screws did it produce in the year 2012?Assume that the machine worked on all the days of the year.

HINT :2012 was a leap year.

Join BYJU'S Learning Program