Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • A massless rope is fixed at one end as shown in fig. Two boys of masses 40kg and 60kg are moving along the rope. The former climbing up with an acceleration of <img alt="2m/s^2" src="http://en

A massless rope is fixed at one end as shown in fig. Two boys of masses 40kg and 60kg are moving along the rope. The former climbing up with an acceleration of 2m/s^2 while later coming down with a constant velocity of   5m/s. The tension (in N) at fixed support will be (g=10m/s^2)

Option: 1

1080


Option: 2

1000


Option: 3

1200


Option: 4

1100


Answers (1)

best_answer

Solution :

  \\ \text{For 40 Kg block :}

\\ \text{As 40KG Boy is accelerating upwards }

T-T_1-40g=40a

T=T_1+40g+40\times 2

\\ T=T_1+40g+40\times 2 \\ T=T_{1}+400+80 \\ T=T_{1}+480 \ \ \ \ -(1)

\\ \text{For 60 Kg block :}

\\ \text{As 60Kg boy is in uniform velocity, So acceleration of 60 kg will be zero }

\therefore T_{1}= 60g = 60\times 10 = 600 N \text {put in equation (1) }

\\ T= 600+480= 1080 N

 

Posted by

manish painkra

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

BSEB Super 50 performed ‘brilliantly’ in JEE Main, 23 scored above 95 percentile: Bihar Board chairman
anam-khan

IIIT Allahabad cut-offs for BTech ECE, IT, IT-Business Informatics goes up in last 3 years; seat matrix
anam-khan

IIIT Hyderabad JEE Main cut-offs for BTech CSE, ECE of last 5 years; modes of admissions for dual degrees

Latest Question