Hi,

This is my first post on the forum. I would like to introduce myself as an engineer that is still using a calculator instead of an iPhone application at work.

In 2007 I bought the HP35s as a replacement for another calculator and wrote a few programs to simplify several tasks. As a programming beginner I found the key stroke style much easier to use and get results. I stumbled on this site by accident searching for HP35s programming examples online. I also obtained the matrix program from stefan's website which helped a lot.

As my thanks to all the volunteers I am posting this simple program to calculate rope tension. Useful for riggers on the field who owns an HP35s calculator.

Schematic of problem ::

**HP35s Calculator Max Rope Tension Program **

**Keystrokes Display Description**

XEQ P ENTER Run: program P pulley/sheaves

981 R/S L? Enter the load L = 981N

0.02 R/S F? For friction we will use m = 0.02

12 R/S N? Enter 12 as the number of parts

3 R/S D? 3 for deflected pulley/sheaves

96.51 Ans : 96.51NThe new code listing is as follows:

**Line Instruction Comments**

P001 LBL P

P002 INPUT L Enter load L

P003 INPUT F Enter friction coeficient e.g 0.02

P004 INPUT N Enter the number of line parts

P005 INPUT D This is the number of deflected sheaves

P006 1

P007 ENTER

P008 RCL F

P009 +

P010 RCL N

P011 ENTER

P012 1

P013 -

P014 yx

P015 STO A

P016 ENTER

P017 1

P018 ENTER

P019 RCL F

P020 +

P021 RCL D

P022 yx

P023 STO B

P024 ENTER

P025 0

P026 ENTER

P027 RCL N

P028 1

P029 -

P030 RCL F

P031 ENTER

P032 1

P033 +

P034 x<>y

P035 yx

P036 +

P037 DSE N

P038 GTO P027

P039 STO T

P040 ENTER

P041 RCL A

P042 ENTER

P043 RCL B

P044 x

P045 RCL T

P046 ÷

P047 RCL L

P048 x

P049 STOPLN=101 Checksum=FD5A

*Compiled by Jean-Marc Biram, Copyright © 2007 Free Software Foundation Distributed under the version 3, GNU general public license*

I tried to get the formatting as best I could