0

Guest

Courses New

Blocks P and R from rest and moves to the right with acceleration aP = 12t m/s^2 ans aR = 3m/s^2 Here t is seconds. The time when block Q again comes to rest is(1) 1s(2) 3/2 s(3) 2s(4) 1/2s

Blocks P and R from rest and moves to the right with acceleration aP = 12t m/s^2 ans aR = 3m/s^2 Here t is seconds. The time when block Q again comes to rest is(1) 1s(2) 3/2 s(3) 2s(4) 1/2s

Question Image
Grade:12th pass

2 Answers

Ishika Joshi
11 Points
6 years ago
Here, to ensure that the block Q is at rest, we will find the relation between the velocities of the blocks using the constraint concept.We arrive to a relation:V(p)-V(r)-V(q)=0...(i)We know, v(p)=6t^2, v(r)=3t (integrating the given values) We want v(q)=0Therefore, using eqn(i),6t^2=3tt=1/2
Balkaran Singh
13 Points
4 years ago
Ap=12t 
Vp=integration Vp=12t^2/2=6t^2
Integration Vr=3=3t
6t^2×T-3t×T-2T×v=0
6t^2=3t................
t=1/2 sec

Think You Can Provide A Better Answer ?

Other Related Questions on Mechanics

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More