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11TH GRADE PHYSICS
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Describing about force newton law and motion .
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PHYSICS- GRADE 11 AND GRADE 12 (MODE2)APPLICATION AND DERIVATION
Force and Motion—II
THE DRAG FORCE AND TERMINAL SPEED
UNIFORM CIRCULAR MOTION
WORK AND KINETIC ENERGY
Center of Mass and Linear Momentum
Rotation
UNIFORM CIRCULAR MOTION
If the moon moves in a circular orbit around Earth, its motion is always tangent to its
path, as shown. Does the gravitational force do work on the Moon? Use this flowchart
to determine the answer.
Answer: The diagrammatical representation is usually providing the force which is in the Form of the
force which directly parallel to the total distance covered by the earth from point 1 to thee point 2
The same will happen to the Moon.
,Applying a Force That Is Perpendicular to the Motion
Assume that you are carrying your physics textbook down the hall, at constant velocity, on your way to
class. Your hand applies a force directly upward to your textbook as you move along the hallway. When
considering the work done on the textbook by your hand, you can see that the upward force is
perpendicular to the displacement. In this case, the work done by your hand on the textbook is zero
(see Figure 5.6). It is important to note that your hand does do work on the textbook to accelerate it
when you begin to move, but once you and the textbook are moving at a constant velocity, you are no
longer doing work on the book.
All the Force depends upon Parallel and perpendicular forces in motion of the body
,You are exerting a W = F∆d, W= 0 ×∆d, W=0 upward force (against gravity) on your book to prevent it
from falling. However, since this force is perpendicular to the motion of the book, it does no work on the
book.
, Derivation:
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