Because its the presidents chair
President John F. Kennedy had a Rocking Chair in the oval office. He had a bad back from a war injury, and sitting in the chair gave him relief from the pain.
A Chairperson?
AnswerBenjamin Franklin
Honorable Joe Baca
Is a hammer a lever?
A chair is an example of a compound machine because it is made up of multiple simple machines, such as a lever (backrest), wheel and axle (swivel chair), and possibly screws (for assembly).
A wheel is a wheel, but in terms of torque it can act as a lever.
A rocking chair is a type of lever, with the fulcrum being the curved base which allows the chair to rock back and forth. It can be classified as a type of lever or a combination of a lever and a pivot.
to move your arms like you are in a wheel chair.
No. Depending on how you use the wheel and axle changes what type of lever it is. If the wheel is turning the axle it is a second class lever. If the axle is changing the wheel, it is a third class lever.
to move your arms like you are in a wheel chair.
the cost of a electric wheel chair is $900 to $1000
Need a doggie wheel chair,How much do they cost.
NOPE
A barber chair is a type of lever simple machine. By using a lever mechanism, a barber can easily adjust the height of the chair to accommodate different clients.
No.It is not a lever ,It is a wheel and axle.