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Community shelf Community shelf -> for all chemistry lovers.........................!!!!!!!!!!!!!!!!!!!!!!!!!!!! -> Go to message
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very nice
Community shelf Community shelf -> Circular Motion -> Go to message
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6 replies   
thank u frnds
Community shelf Community shelf -> take precautions -> Go to message
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thanks yaar.....
Community shelf Community shelf -> ALL GOOD EDUCATIONAL. LINKS plzz see it(definately useful) -> Go to message
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nice job........
Community shelf Community shelf -> Quite Useful Formulas....... -> Go to message
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do comments
Community shelf Community shelf -> Quite Useful Formulas....... -> Go to message
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Linear Motion Formulas

Velocity can be expressed as (velocity = constant):
v = s / t (1a)
where
v = velocity (m/s, ft/s)
s = linear displacement (m, ft)
t = time (s)
Velocity can be expressed as (acceleration = constant):
v = V0 + a t (1b)
where
V0 = linear velocity at time zero (m/s, ft/s)
Linear displacement can be expressed as (acceleration = constant):
s = V0 t + 1/2 a t2 (1c)
Combining 1a and 1c to express velocity
v = (V02 + 2 a s)1/2 (1d)
Velocity can be expressed as (velocity variable)
v = ds / dt (1f)
where
ds = change of displacement (m, ft)
dt = change in time (s)
Acceleration can be expressed as
a = dv / dt (1g)
where
dv = change in velocity (m/s, ft/s)
 
Community shelf Community shelf -> Reagents -> Go to message
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35 replies   
good job dude.......
Community shelf Community shelf -> Circular Motion -> Go to message
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6 replies   
do commentssss
Community shelf Community shelf -> Circular Motion -> Go to message
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6 replies   

Circular Motion

Motion that repeat itself is called periodic motion. A projectile motion, since it doesn't repeat, is not periodic. The motion of a swinging ball is an example of circular motion. Let's analyze the circular motion.
Consider a planet around the Sun.
Animation of a planet orbiting around Sun
When there is no external force, an object will travel in a straight line (Newton's First Law of Motion). In order for an object to travel in a circle, there has to be a force that makes it travel in a circle.
 
Check!
An object in circular motion always tries to move in a straight line (Law of Inertia). However, there is a force that acts toward the center of the motion. This force is called the centripetal force. It is the centripetal force that makes an object travel in a circular path. This force could be friction or a gravitational force, but we call it a centripetal force.
Centripetal force always acts toward the center
When the centripetal force is too strong, the ball will accelerate toward the center of the circle. When the centripetal force is too weak, the ball will get out of the orbit. An object will maintain a circular motion only when the centripetal force is well balanced.
These formulas can be used to calculate the centripetal force:
 
Check!
Where:
Fc: is the centripetal force (N)
m: is the mass (kg)
ac: is the centripetal acceleration (m/s2)
v: is the speed (m/s)
r: is the radius of the circle (m)
t: is the period (the length of time required for one complete rotation) (s)
Too complicated? Let's see a concrete example.
You are rotating with Earth, so you are experiencing a circular motion.
Say you have a mass of 50 kg. We know the radius of the circle (6,378,000 m = radius of Earth) and its period (24 hours = 86400 seconds). From this information, you can calculate velocity, acceleration, and centripetal force acting on you.
 
Check!
To calculate velocity, use the formula .
m/s = 1670 km/h.
To calculate acceleration, use the formula .
m/s2.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Catalogs Discussion Forums -> Mechanics -> what to study in the fluid mechanics for iitjee -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
1 replies   
vectors
motion in one and two dimension
projectile motion
circular motion
Newton's laws of motion
 
rate...
Catalogs Discussion Forums -> Algebra -> which is the best book for maths -> Go to message
This Post 2 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]
8 replies   
Arihant is good
Catalogs Discussion Forums -> Differential Calculus -> cud neone hlp me by providin me d graph of [2sin x] -> Go to message
This Post 10 points    (Olaaa!! Perrrfect answer.   in 2 votes )   [?]
9 replies   
f(x)=[2sinx]
f(0)=[0]=0
f(1)=[0.035]=0
f(2)=[0.0698]=0
.
.
..
.
the answer is 0 untill x=29
but now
f(30)=[2sin30]=[1]=1
ans is 1 untill x=89
here is the graph
rate me for my efforts
click on d graph dan u can see it clearly
Catalogs Discussion Forums -> Differential Calculus -> cud neone hlp me by providin me d graph of [2sin x] -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]
9 replies   
wat is ur id?
Catalogs Discussion Forums -> Differential Calculus -> cud neone hlp me by providin me d graph of [2sin x] -> Go to message
This Post 10 points    (Olaaa!! Perrrfect answer.   in 2 votes )   [?]
9 replies   
f(x)=[2sinx]
f(0)=[0]=0
f(1)=[0.035]=0
f(2)=[0.0698]=0
.
.
..
.
the answer is 0 untill x=29
but now
f(30)=[2sin30]=[1]=1
ans is 1 untill x=89
 
hey i draw d graph in paint and m trying to attach it here but it is coming dat can not attach
so how to attach?
Catalogs Discussion Forums -> Coaching Institutes & Course Material -> EXCELLENCE ----------A MOUSE- CLICK AWAY. -> Go to message
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4 replies   
here is d link
rate me for finding dis
 
 
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