PPT: Circular Motion | Physics for JEE Main & Advanced PDF Download

 Page 1


Circular Motion
2 ©  Prof. Mukesh N Tekwani, 2011
Page 2


Circular Motion
2 ©  Prof. Mukesh N Tekwani, 2011
Why study Circular Motion?
• To understand 
– Motion of planets
– Motion of electrons around the nucleus
– Motion of giant wheel
– Motion of space stations
– Motion of moon and satellites
©  Prof. Mukesh N Tekwani, 2011 3
Page 3


Circular Motion
2 ©  Prof. Mukesh N Tekwani, 2011
Why study Circular Motion?
• To understand 
– Motion of planets
– Motion of electrons around the nucleus
– Motion of giant wheel
– Motion of space stations
– Motion of moon and satellites
©  Prof. Mukesh N Tekwani, 2011 3
Circular Motion
• It is defined as the motion of a particle along a 
complete circle or part of a circle.
• Fore circular motion, it is NOT necessary that 
the body should complete a full circle.
• Even motion along arc of a circle is circular 
motion
©  Prof. Mukesh N Tekwani, 2011 4
Page 4


Circular Motion
2 ©  Prof. Mukesh N Tekwani, 2011
Why study Circular Motion?
• To understand 
– Motion of planets
– Motion of electrons around the nucleus
– Motion of giant wheel
– Motion of space stations
– Motion of moon and satellites
©  Prof. Mukesh N Tekwani, 2011 3
Circular Motion
• It is defined as the motion of a particle along a 
complete circle or part of a circle.
• Fore circular motion, it is NOT necessary that 
the body should complete a full circle.
• Even motion along arc of a circle is circular 
motion
©  Prof. Mukesh N Tekwani, 2011 4 5
Circular Motion
X 
? = 0
y
i
f
How do we locate something on a circle?
Give its angular position ?
What is the location of
90
0 
or  p/2
©  Prof. Mukesh N Tekwani, 2011
Page 5


Circular Motion
2 ©  Prof. Mukesh N Tekwani, 2011
Why study Circular Motion?
• To understand 
– Motion of planets
– Motion of electrons around the nucleus
– Motion of giant wheel
– Motion of space stations
– Motion of moon and satellites
©  Prof. Mukesh N Tekwani, 2011 3
Circular Motion
• It is defined as the motion of a particle along a 
complete circle or part of a circle.
• Fore circular motion, it is NOT necessary that 
the body should complete a full circle.
• Even motion along arc of a circle is circular 
motion
©  Prof. Mukesh N Tekwani, 2011 4 5
Circular Motion
X 
? = 0
y
i
f
How do we locate something on a circle?
Give its angular position ?
What is the location of
90
0 
or  p/2
©  Prof. Mukesh N Tekwani, 2011 6
Circular Motion
is the angular position.
Angular displacement:
i f
Note: angles measured Clockwise (CW) are negative and 
angles measured (CCW) are positive.  is measured in 
radians.
2 radians = 360 = 1 revolution
x
y
i
f
©  Prof. Mukesh N Tekwani, 2011