Dear students, machine is new chapter for you. First read the physics book page no.49 and 50.
MACHINE
Machine, simple device that affects the force,
or effort, needed to do a certain amount of work.
Machines can make a
tough job seem easier by enabling a person to apply less force or to apply
force in a direction that is easier to manipulate. Machines lessen the force
needed to perform work by lengthening the distance over which the force is
applied. Although less force is subsequently used, the amount of work that
results remains the same. Machines can also increase the speed at which work
makes an object travel, but increasing speed requires the application of more
effort.
There are four types of simple machines: the lever, the pulley, the inclined plane, and the wheel
and axle.
In the next blog I will discuss function of machines. Don’t
forget to revise for second card test.
No comments:
Post a Comment