Zigya Logo

Chapter Chosen

Motion in A Plane

Book Chosen

Physics Part I

Subject Chosen

Physics

Book Store

Download books and chapters from book store.
Currently only available for.
CBSE Gujarat Board Haryana Board

Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for.
Class 10 Class 12
What is the displacement of a point on the wheel of radius R initially in contact with ground when the wheel rolls forward half a revolution?


Given, 

Radius of the wheel = R 

When half revolution is made by the wheel, the point of contact moves from point A to C and hence undegoes the displacement stack AC. with rightwards arrow on top 


Distance displaced by the point of contact, AB = pi R 

Perpendicular distance traversed by the body = 2R

Therefore, total distance, 

A C equals space square root of AB squared plus BC squared end root space

space space space space space equals space square root of left parenthesis pi R right parenthesis squared plus left parenthesis 2 R right parenthesis squared end root space

space space space space space equals R square root of pi squared plus 4 end root space

and tan space straight theta space equals space BC over AB equals 2 over straight pi 

Thus the point of contact undergoes the displacement of magnitude straight R square root of straight pi squared plus 4 end root making an angle straight theta equals tan to the power of negative 1 end exponent 2 over straight pi with the ground.

140 Views

Give three examples of scalar quantities.

Mass, temperature and energy
769 Views

What is a vector quantity?

A physical quantity that requires direction along with magnitude, for its complete specification is called a vector quantity.
835 Views

What is a scalar quantity?

A physical quantity that requires only magnitude for its complete specification is called a scalar quantity.
1212 Views

What are the basic characteristics that a quantity must possess so that it may be a vector quantity?

A quantity must possess the direction and must follow the vector axioms. Any quantity that follows the vector axioms are classified as vectors. 


814 Views

Give three examples of vector quantities.

Force, impulse and momentum.
865 Views

1.png
curious learner
Do a good deed today
Refer a friend to Zigya