Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • A small block of mass 100 g is tied to a spring of spring constant 7.5 N/m and length 20 cm. The other end of spring is fixed at a particular point A. If the block moves in a circular path o

A small block of mass 100 g is tied to a spring of spring constant 7.5 N/m and length 20 cm. The other end of
spring is fixed at a particular point A. If the block moves in a circular path on a smooth horizontal surface with
constant angular velocity 5 rad/s about point A, then tension in the spring is –

Option: 1

0.75N


Option: 2

1.5N


Option: 3

0.25 N


Option: 4

0.50 N


Answers (1)

best_answer

\begin{aligned} & k x=m \omega^2 r \\ & \Rightarrow k x=0.1 \times 25 \times(0.2+x) \\ & \Rightarrow 7.5 x=2.5(0.2+x) \\ & \Rightarrow 3 x=0.2+x \\ & \Rightarrow 2 x=0.2 \\ & \Rightarrow x=0.1 \mathrm{~m} \end{aligned} \\ \text{Now, tension in the spring } =k x=7.5 \times 0.1 \mathrm{~N}=0.75 \mathrm{~N}

Posted by

Divya Prakash Singh

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

JEE Main 2025: BTech CSE cut-offs for PwD candidates at NITs make entry easy; top institutes still selective
anam-khan

73 or 99 percentile? JEE Main result questioned, J-K candidate says, ‘Don’t create hype’
anam-khan

JEE Main 2025: 11 from Kota coaching centres among 24 students with 100 percentile

Latest Question