Q:A chair of mass 12kg is pushed along a level floor by a force that is at an angle of θ=35.0degrees below the horizontal. The coefficient of friction between the chair and the floor is ?=0.430. The power that the force provides to move the chair in a straight line at a constant speed of 3.8m/s is?

Let the applied force be P at 35 degree below the horizontal. Then its component Psin35 acts vertically downward. And component Pcos35 acts horizontally to move the chair P cos35 balances Friction force to move the chair with constant velocity Normal reaction on chair N =weight W of chair + Psin35 Friction force = co eff. of friction*normal reaction N Friction force=0.430*(12*9.8 + Psin35 ) Pcos 35 =Friction force=0.430*(12*9.8 + Psin35 ) Pcos 35 -0.430*Psin35 =0.430 *12*9.8 P[0.819 -0.43*0.573[ = 50.568 P *0.572 =59.568 P = 50.568 / 0.572 = 88.4 newton Power = force(P). velocity v=Pv cos 35=335.9*cos35 Power = 275 watt

Q:We are ordering office chairs but our desk height is 33 3/4 in. from floor to counter top. Which is too high for our current chairs. I have pain in my elbows and wrists from typing with my arms bent up to the desk. I don't know how chair height is measured so I can't tell what height to order for proper height. Thanks for any help.

Office Chair height is measured from the floor to the highest point on the back of the chair. You might ask where ever you are ordering from what the distance from the seat to the floor is at its lowest point as well as highest point. Your desk height is a bit higher than a standard desk, which is 29 1/2 inches high. You might consider a task stool for your seating. You can order one that looks almost exactly like an office chair except it has a ring about the base to rest your feet on so that you can raise your seat up higher and not develop back problems from your feet hanging or not being firm on the floor. My company sells all types of chairs if you wanted to browse our website or give us a call.

Q:what is the purpose of chairs being attached to desks ? like the ones you see in some high schools ..

So you dont rock them, or fall off. Like some teachers say all four legs are supossed to be on the ground.

Q:Does anyone remember the small soft chairs that would fold flat into a bed? They had no frame, just padding and cloth. Sat about 1ft to 1.5 ft high when a chair and about 6-8 inches high when folded out to a bed. I cannot find then anywhere, please help. thanks.

www.okorder /. for more just type fold out chair in google and search

Q:I am designing a chair for a musician for a school project and have a few questions about the ergonomics of the chairs that musicians sit it while performing and practicing. a. How often (on average) do you practice/play per week? b. What is the proper posture for playing your instrument while sitting? c. Do you prefer to stand or sit when performing/practicing? Why? d. Do you have any physical ailments associated with sitting while playing your instrument? e. How does your seat position within an orchestral setting affect your playing? f. Do you have a favorite chair when practicing/playing? If so, what do you like about it? g. What do you like/not like about the chairs you are typically required to use? h. Would you consider buying a purposely-designed chair for playing if you knew it would help your performance and/or health? i. What characteristics would define an ideal musician’s seat for you and your instrument?

I play the flute, a. I play Monday through Friday for an hour with my school band, and about 30 minutes to an hour most evenings. b. Proper posture is to have both feet flat on the floor while sitting on the edge of the seat with a straight back. c. I prefer to stand when I'm playing by myself, because it makes breathing easier. d. If I have to hold my instrument up for a while, my arms ache, but it's nothing too major. e. The worst part about being a flute player is having to adjust for space and trying to hold the instrument around the chair. So we're constantly shifting, trying to get comfortable. f. The chair I like to use if I have to sit is a little taller and has a lower back. g. The chairs I have to use are generally hard plastic, which is uncomfortable, and they have high backs that are difficult to maneuver around. h. Yes I would. i. One with a lower back, so I could hold my instrument over it, and a little more suited to sitting for longer periods of time.

Q:My back is starting to hurt from me lying on my bed whilst playing x-box and its time for a change, its my birthday coming up so i would like something different a a good bean bag or gaming chair.Which one should i get and which is comfier ?

Gaming chair. Many gaming chairs provide back support, and some come with surrond sound.

Q:What is the best high chair in your opinion? I especially wonder about the cover. Vinyl or fabric or just wooden chair. Also, when your baby started using the chair: before being able to seat on his own or after?

I okorder / for more designs.

Q:I'm going to buy one next week for my son and I want something nice... preferably compact, but not necessarily. I also don't want one of those you sit in a chair and strap on to it. I want a completely seperate high chair for him! Thanks!

We really like our Chicco Polly Double Phase high chair. It wipes clean very easily, both the seat cover and the trays. It has lots of adjustments. I use it up high at the table for dinners and lunch, but I like to use it on a low setting in the morning because I sit on the couch in the living room to feed our daughter breakfast. It has wheels on the bottom similar to office chairs so it wheels around easily (they also lock). It has a mesh pocket at the back where I store all the baby's bibs and the tray hangs on the back legs when not in use so it is nice and compact. It also folds easily and is very slim. Once your baby is ready to eat at the table it can be used as a toddler chair. It has two covers, one large more plush one on top for use when they are babies and a smaller pad underneath for use when they are a toddler.

Q:the laugh and learn potty chair..is it worth the $30.00? when you flush the toliet what happens? thanks

is not worth. can't you teach your own baby how to do it? is it really soooo hard? omg parenting this days

Q:If you do, do you have a pad in it? Where did you get it? I found a website, but they are $44.00 for a plain one!!

I have a wooden hand crafted Amish high chair. It did not come with a pad, so I just started using the cushion from one of our kitchen chairs. It worked so nicely I went out and bought a different chair cushion of which I used in the high chair now. Sometimes when the cover of the cushion gets dirty, I will use an old towel to wrap the pad in which works nicely for messes. Just take off pad and wash. the chair cushion I bought was only like 6 or 7 dollars at shopko. It think 44 dollars for something that is going to get much wear and tear is insane. Just go buy a cushion from a department store and put in the chair (reccomend one with a removeable cover!)