Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

a particle moves in a ciorcle of radius 21/22 mwith constant speed 1m/s.find: a)magnitude of av velocity b)magnitude of av acceleration in 2 secs.

a particle moves in a ciorcle of radius 21/22 mwith constant speed 1m/s.find:


a)magnitude of av velocity


b)magnitude of av acceleration in 2 secs.

Grade:11

1 Answers

AKASH GOYAL AskiitiansExpert-IITD
419 Points
10 years ago

Dear Student

Particle will cover a distance of 2m in 2sec.

circumference of circle= 2*22/7*21/22 = 6m

in 6m angular displacement is 3600. so in 2m it will be 1200

join centre to the initial and final position of the particle. it will be a triangle with 1200 angle at the centre and other two angle equal to 300 each.  length of cord will give the displacement.

if rad is R then

displacement= 2Rcos300= 2*21/22*√3 /2 = 21√3/2

avg vel =disp/time= 21√3/4

 

let at t=0 v1= i (i is unit vector along x axis) and particle is moving clockwise

at t=2 , v2= -sin300 i + -cos300 j= -i/2 - √3 /2 j

v2-v1= -3i/2 - √3 /2 j

avg acc= (-3i/2 - √3 /2 j)/2

 

Cracking IIT just got more exciting,It’s not just all about getting assistance from IITians, alongside Target Achievement and Rewards play an important role. ASKIITIANS has it all for you, wherein you get assistance only from IITians for your preparation and winexciting gifts by answering queries in the discussion forums. Reward points 5 + 15 for all those who upload their pic and download the ASKIITIANS Toolbar, just a simple click here to download the toolbar….
So start the brain storming…. become a leader with Elite Expert League ASKIITIANS

Thanks

 

 

AKASH GOYAL

AskiitiansExpert-IIT Delhi

 

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free