Connecting Students in 221 Countries

Search *

Video Lectures

Video Lecture Advance Illustration My Sequence My Bookmark

High School/JEE/NEET/IPhO Physics | 17-19 Yrs

Basic Tools

Mechanics

Heat & Thermodynamics

Oscillation & Waves

Properties of Matter

Gravitation

Electrostatics

Electric Current & Circuits

Magnetic Effects

Optics

Modern Physics

Semiconductors

Communication Systems

Sir why do we add a = 2m/s² when the observer is inside lift and doesn't consider it ?

2 years ago by Shubham

Post your answer here

Why not calculated time at initial velocity at 5 m/s ?

4 years ago by

Post your answer here

Sir, can time should be same when we pute u=5 m/s isted of u=0 ?

4 years ago by

Post your answer here

sir!! why we tahe acceleration only be g while we are talking with net acceleration with respect to ground....

5 years ago by Shubham Vig

Post your answer here

sir why have you taken relative acceleration positive ?

6 years ago by Dharamjeet Singh

Post your answer here

quset 3 ques 14 ans should be c

7 years ago by Silla Priyadarshni

Post your answer here

sir why we are taking velocity with respect to ground as 5 m/s?

7 years ago by Aakash

Post your answer here

I found out Vel. of bolt wrt lift =4(3)^1/2 m/s. Now I used the formula of relative velocity as Vel. Of bolt wrt lift + Vel.of lift wrt grd= Vel. Of bolt wrt grdie. -4(3)^1/2 + 5 = 5+ 4(3)^1/2m/s using this i got vel. Of bolt wrt grd=5-4(3)^1/2 m/s which is different from the answer 5-10/(3)^1/2 m/s....so where am I wrong and why....plz help

7 years ago by Chetan Gupta

Post your answer here

why we have taken u negetive??

9 years ago by sudeep khare

Post your answer here

why did we add the accelerations they are in opposite directions so the net acceleration should be 8....pls help

9 years ago by nishita

Post your answer here

Sir.. if we take everything with respect to ground bolt's U=+5m/s a=-10 and s=-2........ then we get v=root 65 sir?

9 years ago by JS.Akshaiy Ramlinkam

Ans 1 ->

and how can u take s=-2 wen u've considered lift as reference frame?

9 years ago by JS.Akshaiy Ramlinkam

Ans 2 ->

If you are taking ground as reference frame then you cannot use s=-2 in 3rd eq. because s=-2 when we take lift as reference frame. The person at ground observes a different displacement s of bolt which can be cal. as s=5(1/root3)-1/2*g*1/3 and then you put s in 3rd eq. to get velo. final. But it is very complex procedure so you can use 1st eq. to get direct result...

9 years ago by sudeep khare

Post your answer here

I have the same doubt as asked by Suhail Hakeem.

10 years ago by Apurv Upreti

Ans 1 ->

g can be considered in all ref frames as body weight acts everywhere due to gravity... but in other reference frames we consider relative acceleration...

9 years ago by Physics Galaxy

Post your answer here

Sir, why we consider 'g' only in frame of reference of ground?

10 years ago by Suhail Hakeem

Ans 1 ->

g can be considered in all ref frames as body weight acts everywhere due to gravity... but in other reference frames we consider relative acceleration...

9 years ago by Physics Galaxy

Log In with by just Once Click -

OR

OR
Log In with your mail ID -
E-Mail:	Enter correct email id. Enter your email id.
Password:	Enter your password.

	Forgot Password ? Click here New User ? Click here

OR

OR

Video Lectures

High School/JEE/NEET/IPhO Physics | 17-19 Yrs

Share this with your friends :

Post your question related to above video lecture

Post your answer here

Post your answer here

Post your answer here

Post your answer here

Post your answer here

Post your answer here

Post your answer here

Post your answer here

Post your answer here

Post your answer here

Post your answer here

Post your answer here

Post your answer here