A simple machine does not have this in the structure :
(a) load.
(b) fulcrum
(c) effort
(d) wheel
Answers
Answer:
OPTION D
Explanation:
A simple machine does not include the wheel part . It may or may not have "wheel" .
However a simple machine must have the other parts namely :
Load , effort and fulcrum .
Load is the force that has to be overcome by the machine .
Effort is the force applied on the machine to overcome the load .
Fulcrum is the point that supports the machine .
The ratio of load to effort is defined as the mechanical advantage .
The mechanical advantage can be 1 only if the load is equal to the effort .
The mechanical advantage is less than one if load is more than effort and the machine acts as force multiplier .
The mechanical advantage is less than one when the effort is more than load . The machine acts as a speed multiplier in this case .
Answer:
" Option D - Wheel " is correct answer.
A simple machine does not have "wheel" in the structure.
Extra Information:
A simple machine does not contain "wheel" in its structure as "wheel and axle" is one of the type of simple machine.
But a simple machine must consists of three parts that are:
Load, fulcrum and effort.
The load is the object that is moved or lifted. The fulcrum is the pivot point. The effort is the force required to lift or move the load.
Information about wheel and axle:
Wheel and axle is made up of two cylinders of different diameters. These cylinders are mounted with an axle in such a way that both of the cylinders spin on the same axis. While working with it, generally, effort is applied to the big cylinder and the load is lifted by the small cylinder. In some examples, like in the knob of a door, a screw driver, steering of vehicles etc., the work of the small cylinder is done by the axle itself. Some other examples of wheei and axle are the string roller of a kite, a spanner, the wheel of a sewing machine, etc.