Use app×
Join Bloom Tuition
One on One Online Tuition
JEE MAIN 2025 Foundation Course
NEET 2025 Foundation Course
CLASS 12 FOUNDATION COURSE
CLASS 10 FOUNDATION COURSE
CLASS 9 FOUNDATION COURSE
CLASS 8 FOUNDATION COURSE
0 votes
174 views
in Physics by (525 points)
edited by

Two sphere A and B of radii R and 2R connected through a string and they are in equilibrium in a density ρ as shown in figure. If density of A is 4ρ, then density of B is

Please log in or register to answer this question.

1 Answer

+1 vote
by (36.3k points)

Correct option is (B) \(\frac{5\rho}8\)

Let density of \(\rho_B\)

VA\(\rho\)n + VB\(\rho_B\) g = V\(\rho\)g

\(\frac43\)πR3 4\(\rho\)g + \(\frac43\)π(2R)3\(\rho\)g = V\(\rho\)g

\(\frac43\)πR3 4 \(\rho\)g + \(\frac43\)π(8R3\(\rho_B\)g = \(\frac43\)πR3\(\rho\)g

4\(\rho\) + 8\(\rho\)B = 9\(\rho\)

8\(\rho\)B = 9\(\rho\) - 4\(\rho\)

\(\rho\)B = \(\frac{5\rho}8\)

Related questions

0 votes
1 answer
asked Mar 2, 2023 in Physics by Integrity (25 points)
0 votes
0 answers
asked Jun 9, 2021 in Science by Jonathan Jae (70 points)
0 votes
0 answers
asked Jun 9, 2021 in Science by Jonathan Jae (70 points)
0 votes
1 answer
asked Jun 9, 2021 in Science by Jonathan Jae (70 points)

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...