Browse by Stream
QnA
Home
Search for Exam, Articles, Questions
QnA
get app
Go To Your Study Dashboard
  1. Home
  2. Can someone explain - Motion of System Of Particles and Rigid Body - NEET
# Engineering

A small object of uniform density rolls up a curved surface with an initial velocity '\nu'. It reaches upto a maximum height of

\frac{3\nu^{2}}{4\text{g}}with respect to the initial position. The object is:

  • Option 1)

    Disc

  • Option 2)

    Ring

  • Option 3)

    Solid sphere

  • Option 4)

    Hollow sphere

 

Answers (2)
D divya.saini

As we learned in concept

Rolling of a body on an inclined plane -

a= frac{gsin Theta }{1+frac{K^{2}}{R^{2}}}

f= frac{mgsin Theta }{1+frac{R^{2}}{K^{2}}}

- wherein

K=Radius of gyration

Theta = Angle of inclination

 

 

 

V=\sqrt{\frac{2gh}{1+\frac{K^{2}}{r^{2}}}}\:\:\:\:\:\:,\:\:\:\:\:h=\frac{3v^{2}}{4g}

After solving 1+\frac{K^{2}}{r^{2}}=\frac{3}{2}

K^{2}=\frac{1}{2}r^{2}                     so object is disc.


Option 1)

Disc

This option is correct.

Option 2)

Ring

This option is incorrect.

Option 3)

Solid sphere

This option is incorrect.

Option 4)

Hollow sphere

This option is incorrect.

A AYUSHI VERMA

An object is dropped from a height h from the ground.  Every time it hits the ground it looses 50% of its kinetic energy.  The total distance covered ast\rightarrow \infty is : can you please solve this sorry but i really need a solution but iam not getting any ans

 

Similar Questions

Preparation Products

Knockout JEE Main April 2021 (One Month)

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 14000/- ₹ 4999/-
Buy Now
Knockout JEE Main May 2021

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 22999/- ₹ 9999/-
Buy Now
Test Series JEE Main May 2021

Unlimited Chapter Wise Tests, Unlimited Subject Wise Tests, Unlimited Full Mock Tests, Get Personalized Performance Analysis Report,.

₹ 6999/- ₹ 2999/-
Buy Now
Knockout JEE Main May 2022

Personalized AI Tutor and Adaptive Time Table, Self Study Material, Weekend Live Classes, Mentorship from our Experts, Unlimited Mock Tests and Personalized Analysis Reports, 24x7 Doubt Chat Support,.

₹ 34999/- ₹ 14999/-
Buy Now
JEE Main Rank Booster 2021

Booster and Kadha Video Lectures, Unlimited Full Mock Test, Adaptive Time Table, 24x7 Doubt Chat Support,.

₹ 13999/- ₹ 6999/-
Buy Now
Boost your Preparation for JEE Main 2021 with Personlized Coaching
Start Now
 
Exams
Articles
Questions