(d) Calculate the mobility using the Kutzbach revision of Gruebler equation. 2

A cantilever is to be attached to the flat side of a 6-in wide channel used as a column. The cantilever is to carry a load as shown in the figure. If two fasteners are used, should the array be arranged vertically, horizontally, or diagonally? How would you decide? Specify an optimal bolt pattern and size the bolts. 6 in- 6 in 6 in -in steel plate + 2000 lbf

Find degree of freedom for folding ironing board showed in picture.

Two gas struts with a extended length of 26", compressed length of 16" and a stroke of 10" with a .39" rod and .866" body is being used to hold a door weighing 40 lbs. prior to use, the owner would like to ensure the ball bearings can hold the load of the gas struts closed. The gas strut is a 20 lb compression gas strut, how much force does it take to keep gas strut closed if you were to push straight down in order to compress. Note: The answer is not 20lbs and I need all equations.