Work, Energy, Power, Simple Machines
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PROJECT IN PHYSICS
description
tensionado
Transcript of Work, Energy, Power, Simple Machines
PROJECT IN
PHYSICS
SUBMITTED BY:
Ferdinand L. EsguerraSimon O. BautistaMark Nhiel D. GregoryChristian Eric SumanguidLeuwell S. Avena
WORK
WORK Product of the force applied to a body and the
displacement of the body in the direction of the applied force.
In symbols:
W=Fd
where:W = workF = force d = displacement
If the force applied makes an angle with the direction of motion, the equation used is:
W= Fdcosθ
where:θ = is the angle between F and d
Ability of an object to do work.
KINETIC ENERGY Is the energy in motion
In symbols:
KE= ½mv2
where: KE= kinetic energym= massv= velocity
POTENTIAL ENERGY
Is the stored energy of position
GRAVITATIONAL POTENTIAL ENERGY
The potential energy of a body as a result of its vertical displacement
In symbols:
GPE = mgh
Where:m= massg= is the acceleration due to gravityh= height
POWER
POWER Power is the rate at which energy is transferred,
used, or transformed.
In symbols:
P = W t
where: P = powerW= workt = ocity
SIMPLE MACHINES
SIMPLE MACHINES Is a mechanical device that multiplies, and
changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that provide mechanical advantage.
These simple machines fall into two classes: (I.) the inclined plane, wedge, screw characterized by the vector resolution of forces and movement along a line, and (II.) the lever, pulley, and wheel and axle are characterized by the equilibrium of torques and movement around a pivot.
INCLINED PLANE
An inclined plane is a straight ramp and is used for moving loads up and down the hill
It is a flat surface that lies at an angle relative to level ground used to form a ramp to raise and lower a load.
WEDGE
A wedge is a triangular shaped round tool and is used to separate two objects or portions of an object, lift an object, or hold an object in place.
It functions by converting a force applied to its blunt end into forces perpendicular (normal) to its inclined surfaces
SCREW
A screw is a mechanism that converts rotational motion to linear motion, and a torque (rotational force) to a linear force.
The most common form consists of a cylindrical shaft with helical grooves or ridges called threads around the outside.
LEVER
A lever is constructed from a beam attached to ground by a hinge, or fulcrum.
A lever amplifies an input force to provide a greater output force, which is said to provide leverage.
PULLEY
A pulley is a wheel on an axle that is designed to support movement of a cable or belt along its circumference. Pulleys are used in a variety of ways to lift loads, apply forces, and to transmit power.
WHEEL AND AXLE
A wheel and axle is a simple machine made up of two circular objects of different size. The axle (a small wheel) is attached to the center of a larger wheel. All wheels need an axle. The wheel and axle must move together to be a simple machine. A wheel and axle lifts or moves loads.
