Question

9. Two simple pendulums of lengths 5m and
20m respectively are given small linear
displacement in one direction at the same
time. They will again be in the phase when
the pendulum of shorter length has
completed​

Answer 1

Explanation:

ANSWER

It is given that,

Length of first pendulum, l

1

=5m

Length of second pendulum,l

2

=20m

Time period is given by:

T

1

=2π

g

l

1

T

1

=2π

10

5

=2π

2

1

.......(1)

T

2

=2π

10

20

=2π

2.

......(2)

Solving equation (1) and (2)

T

1

=

2

π

T

2

=2

2

π

so,

T

2

=2T

1

The value of n is 2

Answer 2

Answer:

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