Wheel and Axle

1. DR. PARAS BHURA PT.
MPT- MUSCULO-SKELETAL(ORTHO.)
Wheel and Axel-Dr.Paras Bhura PT

2.  Is another type of simple machine found in
the body.
 It is actually a lever.
Wheel and Axel-Dr.Paras Bhura PT

3.  The wheel and axle is generally considered
to be a wheel attached to an axle so that
these two parts rotate together in which a
force is transferred from one to the other.
OR
 A wheel and axle is a lever that rotates in a
circle around a center point or fulcrum.
 The larger wheel (or outside) rotates around
the smaller wheel (axle).
Wheel and Axel-Dr.Paras Bhura PT

4. It is typically used
 to increase the force exerted &
 to lift weights.
Wheel and Axel-Dr.Paras Bhura PT

5.  Bicycle wheels, the doorknob, Steering
wheels and gears are all examples of a wheel
and axle.
 Wheels can multiply distance and speed as
well as force.
 Bicycles have large wheels so they go faster.
Wheel and Axel-Dr.Paras Bhura PT

6.  Passive Shoulder Rotation
Wheel and Axel-Dr.Paras Bhura PT

7. Wheel and Axel-Dr.Paras Bhura PT

8.  The mechanical advantage of the wheel and
axle is the ratio of the distances from the
fulcrum to the applied loads, same like lever.
 I.e.
MA= Radius of Wheel
Radius of Axle
Wheel and Axel-Dr.Paras Bhura PT

9. Wheel and Axel-Dr.Paras Bhura PT