Mechanical Engineering - Engineering Mechanics - Discussion

Discussion Forum : Engineering Mechanics - Section 6 (Q.No. 12)
12.
The length of a second's pendulum is
94.9cm
99.4cm
100cm
101cm
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
7 comments Page 1 of 1.

Dinesh said:   6 years ago
@Chandu.

Because in seconds, the pendulum time period is 2 sec.

Sachin Sethi said:   6 years ago
Well explained thanks. @Ashish.

Kavya K C said:   7 years ago
The Value of Π is 22/7.

Shubham Narnawre said:   8 years ago
What is the value of pi? please tell me.

Anurup said:   8 years ago
t=2 because a second's pendulum completes an oscillation in 2 seconds. So its time period is equal to 2 seconds.

Chandu said:   9 years ago
@Ashish.

Why your taken t=2?

Ashish said:   1 decade ago
T = 2*pi*sqrt(L/g).

--> 2 = 2*pi*sqrt(L/981).
--> 1 = (pi)^2*(L/981).
--> L = 981/(pi)^2.

--> L = 99.496, i.e. 99.4(approx).
(2)

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