UrbanPro

Location Set your Location

Login Ask & Answer Success Stories Paid Courses Free Classes Tuition & Classes Fees Write a Review All Categories Help Center
Post your Learning Need Signup as a Tutor
✕

Popular Cities

Bangalore

Hyderabad

Delhi

Mumbai

Chennai

Pune

Kolkata

Gurgaon

Ahmedabad

Jaipur

Noida

✕

Take IIT JEE Coaching from the Best Tutors

  • Affordable fees
  • 1-1 or Group class
  • Flexible Timings
  • Verified Tutors

Book a Free Demo

IIT JEE > Learn IIT JEE Coaching > A block is kept on the floor of an elevator at rest....
✕

Search in

A block is kept on the floor of an elevator at rest. The elevator starts descending with an acceleration 12 m/s. Find the displacement of the block during the first 0.2 s after the start?

Asked by Last Modified  

24 Answers

Learn IIT JEE Coaching +1 Physics

Follow 2
Answer

Please enter your answer

NEET,PUC,IIT Physics, .Net Trainer

Since the acceleration of elevator is greater than g (Acceleration due to gravity 9.8 m/s2 ) and block and elevator are not attached, the block will get separated and move like free fall body with acceleration g. we know s=ut+1/2at^2 where u=0 and a=g(free falll acceleration) s=1/2 * 10* 0.2^2...
1 Comments
Dislike Bookmark

Tutor

0.24
1 Comments
Dislike Bookmark

Physics by Ashwani Sir

4.4m
Comments
Dislike Bookmark

English,maths,history, environmental science ,geography,civics, untill primary level

As in the given question acceleration is more than the gravitational pull 'g' i.e., a=12>g=9.8m/s^2, this easily shows its a freely falling body such that a=g, u=0 (given at rest), t=0.2s (given). So substitute this in s=ut+(1/2)a(t^2) ad solve.
Comments
Dislike Bookmark

Physics, IIT expert Faculty at MVN sector-17 Faridabad

Acceleration should be 12m/s^2. If such and block is not bound to be with the elevator then it will go down with acceleration of 'g'. Then displacement in first 0.2s will be s=1/2gt^2 (taking u=0). S=0.2 m
Comments
Dislike Bookmark

Hi Srijin Since the acceleration of elevator is greater than g (Acceleration due to gravity 9.8 m/s2 ) and block and elevator are not attached, the block will get separated and move like free fall body with acceleration g with respect to earth. But the book is inside the elevator, it should be solve...
read more
Hi Srijin Since the acceleration of elevator is greater than g (Acceleration due to gravity 9.8 m/s2 ) and block and elevator are not attached, the block will get separated and move like free fall body with acceleration g with respect to earth. But the book is inside the elevator, it should be solve in reference to elevator. The acceleration with respect to elevator is 12-9.8=2.2 m/sec^2 we know s=ut+1/2at^2 where u=0 and a=2.2 m/sec^2 s=1/2 * 2.2* 0.2^2 s=0.04m above the elevator floor. read less
Comments
Dislike Bookmark

I have 2 years of experience

d = u*t + 0.5*a*t^2 u=0 then d = 0.5*12*0.2*0.2 d=.24
Comments
Dislike Bookmark

Problem Cracker

As the acceleration of the elevator is greater than gravitational acceleration, the lift will freely fall under gravity. So, the displacement of the bidy will be S=0.5*9.8*0.2*0.2=0.196 m.
Comments
Dislike Bookmark

IIT Foundation Expert

s=Ut+(1/2)at^2 Here U=0, t=0.2 Sec, and a=-12 m/s^2 {-ve sign is because its descending object} So Displacement S = (0*0.2) + 1/2 (-12*0.2*0.2) =-0.24 m
Comments
Dislike Bookmark

Tutor

check it
Comments
Dislike Bookmark

View 22 more Answers

Related Questions

Would the tutors/subject-matter-experts be interested in helping students preparing for IIT JEE Mains and advanced by clarifying their doubts online? If yes, contact me.
Please contact for physics
Praneet
I am studying in 8th std and from kerala.i want to be successful in iit jee entrance 2019.how can I achieve my goal?i have no idea and have no excellent coaching centers like vibrant,reasonance etc.kindly advice me.
As a current student at IIT Delhi, having secured All India Rank 748 in JEE 2013, I can confidently tell you that no coaching is required in classes 9 and 10. Dedicated preparation from class 11 will suffice to get a rank within 500.
Malavika
Which coaching institute should I join in class 11 for iit?
I suggest career endeavour or kotta classes You should also prepare by yourself too
Sumit
0 0
5
How important is class 11? Will it be alright if I join a dummy school in class 11and attend coaching class for JEE?
Class 11 is extremely important as it lays the foundation for future exams. Yes, a lot of students join dummy school and concentrate on preparing for JEE by enrolling in coaching institutes because they...
Gowrikanth
0 0
8
How can I learn physics without any tuition coaching or school in class 12?
Lots of material are available in youtYou on different topics. Some are good and some are average ore not good. In Physics, H C Verma is good book. In Physics self learning takes time but whatever you learn, it is lifelong.
Darshan
0 0
5

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

Ask a Question

Related Lessons

How to Solve Numericals in Physics?
Are you scared of numerical? Do you think you don't understand them? If yes, then read ahead. See, it might be any exam, but numerical won't leave your back. So let's talk about common problems and their...

Shuddhodan Sapre

0 0
0
Kinematics: I.E. Irodov (Problems in General Physics) Problem 1.1
Let us solve Irodov problem 1.1 on Kinematics. The problem states: A motorboat going downstream overcame a raft at a point A; τ=60 min later it turned back and after sometime passed the raft...

Ashani Ray

0 0
0
Tension in a String!
Tension

Vishesh N.

0 0
0
Tangential and Radial Acceleration

Vishesh N.

0 0
0
Parallelogram Law of Vector Addition
In this video, we'll study the Parallelogram Law of Vector Addition with one example.

Sunil Yadav

0 0
0

Recommended Articles

What are the important topics for IIT JEE...

With the passion to pursue engineering from a premier institute like IIT, a lot of students aim at cracking the IIT JEE to live this dream right from their 11th standard. Considered as one of the most difficult entrance exams across the globe, not many know how to prepare for JEE and lack correct guidance. Here we will...

Read full article >

Why You Should Switch to Online Coaching...

Looking forward to become an IITian? Searching for best coaching mode to prepare for IIT JEE exam? Then look no further than IIT JEE online coaching classes and start preparing for the test anywhere anytime, as per your convenience. With better connectivity provisions in India, now more and more students are connected...

Read full article >

How to prepare for JEE Physics paper?

JEE is one of the most prestigious engineering exams in India. It is considered as the gateway to the world of immense possibilities. Competing in JEE exam requires focus and devotion to each of the three subjects - Physics, Chemistry and Mathematics. Coming to Physics, it happens to be one of the most loved subjects which...

Read full article >

Importance of IIT JEE Crash Course and Success...

In conversation with Mr. Radhakrishnan K, Head of School Marketing, T.I.M.E., Chennai, on the importance and benefits of taking up IIT JEE Crash Course. He also shared few valuable IIT JEE tips and strategies for standing a better chance at the engineering entrance exam. About T.I.M.E., Chennai: Triumphant Institute...

Read full article >

Find IIT JEE Coaching near you
IIT JEE Coaching in Mumbai
IIT JEE Coaching in Delhi
IIT JEE Coaching in Bangalore
IIT JEE Coaching in Kolkata
IIT JEE Coaching in Chennai
IIT JEE Coaching in Hyderabad
IIT JEE Coaching in Pune
IIT JEE Coaching in Jaipur
IIT JEE Coaching in Chandigarh
IIT JEE Coaching in Ahmedabad

Looking for IIT JEE Coaching ?

Learn from the Best Tutors on UrbanPro

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you
X

Looking for IIT JEE Coaching Classes?

The best tutors for IIT JEE Coaching Classes are on UrbanPro

  • Select the best Tutor
  • Book & Attend a Free Demo
  • Pay and start Learning

Take IIT JEE Coaching with the Best Tutors

The best Tutors for IIT JEE Coaching Classes are on UrbanPro

This website uses cookies

We use cookies to improve user experience. Choose what cookies you allow us to use. You can read more about our Cookie Policy in our Privacy Policy

Accept All
Decline All

UrbanPro.com is India's largest network of most trusted tutors and institutes. Over 55 lakh students rely on UrbanPro.com, to fulfill their learning requirements across 1,000+ categories. Using UrbanPro.com, parents, and students can compare multiple Tutors and Institutes and choose the one that best suits their requirements. More than 7.5 lakh verified Tutors and Institutes are helping millions of students every day and growing their tutoring business on UrbanPro.com. Whether you are looking for a tutor to learn mathematics, a German language trainer to brush up your German language skills or an institute to upgrade your IT skills, we have got the best selection of Tutors and Training Institutes for you. Read more

ThinkVidya Learning Pvt Ltd © 2010-2024All Rights Reserved