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Force and Its Representation, A force is a push or pull acting upon an object as a result of its interaction with another object,in physics, force is what causes a mass to accelerate. It may be experienced as a lift, a push, or a pull. The acceleration of the body is proportional to the vector sum of all forces acting on it (known as the net force or resultant force

contact force types

• Frictional Force
• Tension Force
• Normal Force
• Air Resistance Force
• Applied Force
• Spring Force

and Action at a Distance Forces are

• Gravitational Force
• Electrical Force
• Magnetic Force

the UMPTN 1986 consist of 35 number of problems, is about optics, GLBB, GLB, acceleration, force, newton law, magnetic fields and others. you should download these test by clicking link below

DOWNLOAD UMPTN TEST 1986 WITH MAJOR PHYSIC mirror link 1

DOWNLOAD UMPTN TEST 1986 FISIKA mirror link 2

at physics test sheet UMPTN or now called SPMB begin with acceleration (percepatan) test, energy of kinetic movement, equilibrium of mass,amplitude and period, now at this post let’s learn about acceleration, Test sheet you should dawnload at last of post.
Acceleration shows the change in velocity in a unit time. Velocity is measured in meters per second, m/s, so we can says that acceleration is measured in (m/s)/s, or m/s², which can be both positive and negative, when positive is more faster, but when the value negative is more slower, we can explain by simple matematic simbol that

where v is velocity, d is displacement and t is time.

where a is acceleration, v is velocity and t is time.

then An average acceleration, or acceleration over time, ? can be defined as

for the circular motion we have

it’s simple right, now try to answer the question in sheet below , first you must download it

DOWNLOAD PHYSICS  UMPTN TEST SHEET 2002 mirror link 1

DOWNLOAD LINK FISIKA UMPTN TEST mirror link 2

n this post you will find a complete pdf file of physics test sheet UMPTN or SPMB at year 2000, those sheet/ soal containts about 15 number of problem, first number about normal force, force in parabolic movement , frequencies of hearing human, Carnot machine, mirror and lens, coulomb and fluks, conductor, power in watt and time, and the last is foto electron

now let’s learn about

Carnot machine

this is the diagram of Carnot machine

from those diagram we can consider following characteristics:

• A perfect seal, so that no atoms escape from the working fluid.
• Perfect lubrication, so that there is no friction.
• An ideal-gas for the working fluid.
• Perfect thermal connection at any time either to one or to none of two reservoirs.
• The piston moves back and forth repeatedly, in a cycle of alternating “isothermal” and “adiabatic” expansions and compressions

at this test of spmb still about Light is electromagnetic radiation with a wavelength that is visible to the eye (visible light)
The study of light and the interaction of light and matter is termed optics. then optic The observation and study of optical phenomena such as rainbows and the Aurora Borealis offer many clues as to the nature of light as well as much enjoyment.

other test about mechanism , A mechanism is some technical aspect of a larger process or mechanical device, a part or combination of parts designed to perform a particular function,The scientific definition of a machine is any device that transmits or modifies energy. In common usage, the meaning is restricted to devices having rigid moving parts that perform or assist in performing some work and then about kinetics Kinematics (Greek ??????, to move) is a branch of mechanics which describes the motion of objects without the consideration of the masses or forces that bring about the motion. By contrast, dynamics is concerned with the forces and interactions that produce or affect the motion

then dynamical test,dynamics is the branch of classical mechanics that is concerned with the effects of forces on the motion of objects. The former distinguishes it from kinematics and the latter distinguishes it from statics. In quantum physics, dynamics may refer to how forces are quantized, as in quantum electrodynamics or quantum thermodynamics’s.

download soal fisika spmb 2005

document format is pdf