An ant crawls on a wheel of radius 40 cm. Find the i) distance , ii) displacement of it when it completes half a rotation ?

Asked by Last Modified  

27 Answers

Learn Class IX-X Tuition

Follow 0
Answer

Please enter your answer

Saumitra Dey

B.Sc(Maths).

Displacement covered is 80cm, distance covered is 125.71cm
Comments
Dislike Bookmark

expert in all subjects from 1-xii

Distance travelled by ant is 125.6cm.
Comments
Dislike Bookmark

Headstart to assured 95+ score in math

125.6 and 80 cm
Comments
Dislike Bookmark

Engineer

Distance-:circumference/2=125.7cm approx. ,displacement: diameter/2=80cm.
Comments
Dislike Bookmark

M.A.(Maths.) , CAIIB from Indian Institute of Bankers Bombay

Distance covered as Sh. Jaganshyam is ok i.e 125.6cm. But displacement is equal to the Diameter of the wheel i.e. 40x2= 80cm that is the distance from one pt. to another pt.
Comments
Dislike Bookmark

Tutor

Distance covered for half the rotation is pi*r . = 3.14* 40 cm =125.6 cm Displacement is the least distance between the end point and the starting point, which here is just the diameter = 80cm.
Comments
Dislike Bookmark

Math Educator for Std.11th ,12th , Engineering Entrance and Degree Level with 11+ Years Experience

Distance covered for half rotation with radius 40 cm = 22/7x40 = 125.6 cm and Displacement (shortest distance means change of position)= 2 x radius = 2 x 40 = 80cm
Comments
Dislike Bookmark

Abhishek S ( M.Pharm.MBA) tutor for IB/International/IGCSE

Distance= 3.14*40*2
Comments
Dislike Bookmark

Your tutor friend.

Yes , its a wheel. But the ant has crawled half the rotation. So, the distance will be 2*Pi*radius / 2 = Pi * r = 3.14*40CM= 125.60cm. But the displacement will be 2R = 80cm.
Comments
Dislike Bookmark

Teacher

Distance is about 126 cm, as indicated in the above two replies. The displace is the length of the line joining the initial and final points, which is nothing but the diameter of the wheel. So, the displacement is 80 cm.
Comments
Dislike Bookmark

View 25 more Answers

Related Questions

Why are women less educated than men?
This is because in India, men were only allowed to work and study and no attention was paid to the women as they made them work as a customer of kitchen only so those ideas are still caried out in some...
Ch Surya Pradeep
Name the silicon compound that is used in the manufacture of glass ?
Quartz
Kumar Upendra Akshay
0 0
9
Find the greatest number of 5 digits exactly divisible by 12, 15 and 36.
99900 is divisible by 12,15,36
Piyush
0 0
9
What is atomic mass?
The mass of an atom of a chemical element expressed in atomic mass units. It is approximately equivalent to the number of protons and neutrons in the atom (the mass number) or to the average number allowing...
Ravi Ranjan
0 0
9
Down the group, metallic character increases or decreases?
decreases
Ravi Ranjan
0 0
8

Now ask question in any of the 1000+ Categories, and get Answers from Tutors and Trainers on UrbanPro.com

Ask a Question

Related Lessons

Common Fractions with Decimal and Percent Equivalents
Fraction Decimal Percent 1/2 0.5 50% 1/3 0.333… 33.333…% 2/3 0.666… 66.666…% 1/4 0.25 25% 3/4 0.75 75% 1/5 0.2 20% 2/5 0.4 40% 3/5 0.6 60% ...
A

Amrtha S.

0 0
0
Memorising Formulae
First understand the derivation of the formula. Summarise all the formulaes on a paper and carry it where ever you go in the pocket. You need not open and learn them. Just make sure you see them when ever you get sometime .

Varsha

0 0
0
Finding the equation of a straight line
Find the equation of a straight line passing through ( -2, 5 ) and (4, -3 ) We can use two point formula to solve this problem ( y - y1) = ( x - x1) • ( y2 - y1)/(x2 - x1 )-----------------------------(...

B.sudhakar

3 0
0
Pythagorean theorem
In mathematics, the Pythagorean theorem, also known as Pythagoras's theorem, is a fundamental relation in Euclidean geometry among the three sides of a right triangle. It states that the square of the...

Prateek Srivastava

0 0
0
गुण सन्धि
गुण सन्‍धि (आद् गुुण:)— यदि 'अ' या 'आ' के बाद 'इ' या 'ई' आए। दोनों के स्‍थान पर ए एकादेश हो जाता है। इसी तरह यदि 'अ' या 'आ' के बाद 'उ' या 'ऊ' आए तो दोनों के स्‍थान पर 'ओ' एकादेश...

Arun

2 0
0

Recommended Articles

Meet Raghunandan.G.H, a B. Tech Tutor from...

Raghunandan is a passionate teacher with a decade of teaching experience. Being a skilled trainer with extensive knowledge, he provides high-quality BTech, Class 10 and Class 12 tuition classes. His methods of teaching with real-time examples makes difficult topics simple to understand. He explains every concept in-detail...

Read full article >

Meet Mohammad Wazid, a skilled trainer for...

Mohammad Wazid is a certified professional tutor for class 11 students. He has 6 years of teaching experience which he couples with an energetic attitude and a vision of making any subject easy for the students. Over the years he has developed skills with a capability of understanding the requirements of the students. This...

Read full article >

Meet Sandhya R, a B.Sc tutor from Bangalore

Sandhya is a proactive educationalist. She conducts classes for CBSE, PUC, ICSE, I.B. and IGCSE. Having a 6-year experience in teaching, she connects with her students and provides tutoring as per their understanding. She mentors her students personally and strives them to achieve their goals with ease. Being an enthusiastic...

Read full article >

Quest Academy - Institute of the month

Quest Academy is a professional Bangalore based NEET and JEE (Main + Advanced) training institute. The academy was incorporated in 2015 to cater to the needs of students, who aim to crack competitive exams by connecting with the best brains around. The institute helps students enhance their skills and capabilities through...

Read full article >

Find Class 10 Tuition near you
Class 10 Tuition in Delhi
Class 10 Tuition in Bangalore
Class 10 Tuition in Hyderabad
Class 10 Tuition in Kolkata
Class 10 Tuition in Mumbai
Class 10 Tuition in Chennai
Class 10 Tuition in Pune
Class 10 Tuition in Noida
Class 10 Tuition in Lucknow
Class 10 Tuition in Gurgaon
Online Tuition Class 10

Looking for Class 10 Tuition ?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you