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Complete the following calculations in your workbook.
What mechanical advantage does a hydraulic press have when punching
holes in a metal sheet with a force of 800 N using only 200 N? Provide your
answer as a ratio.
(3)
06 2. A hydraulic press has an input piston radius of 0,5 mm. It is linked to
an output piston that is three times that size. What mechanical advantage
does this press have?
(9)
3. A hydraulic lift has a mechanical advantage of 5. If the load weighs 350 N,
what effort is required to lift the weight? Provide your answer in newtons. (4)
4. Your deodorant sprays with a force of 15 N. What mechanical advantage is
achieved if your finger presses the deodorant nozzle with a force of 60 N?
Explain your answer.
(4)
[TOTAL: 20​

This question involves a class named textfile that represents a text file. public class textfile { private string filename; private string filename; private arraylist words; // constructors not shown // postcondition: returns the number of bytes in this file public int filesize() { } // precondition: 0 < = index < words.size() // postcondition: removes numwords words from the words arraylist beginning at // index. public void deletewords(int index, int numwords) { } // precondition: 0 < = index < = words.size() // postcondition: adds elements from newwords array to words arraylist beginning // at index. pub lic voidaddwords(int index, string[] newwords) { } // other methods not shown } complete the filesize() method. the filesize() is computed in bytes. in a text file, each character in each word counts as one byte. in addition, there is a space in between each word in the words arraylist, and each of those spaces also counts as one byte. for example, suppose the words arraylist stores the following words: { mary had a little lamb; its fleece was white as snow. } the filesize() method would compute 4 + 3 + 1 + 6 + 5 + 4 + 6 + 3 + 5 + 2 + 5 as the sum of the lengths of each string in the arraylist. the value returned would be this sum plus 10, because there would also be 10 spaces in between the 11 words. complete the filesize() method below: // postcondition: returns the number of bytes in this file public int filesize() { }