Question

What time does it take for a pendulum of
small oscillations if the pendulum is
gently dropped from a height of 20 mm?
It is known that the mass of the bob is 2
kg, the length of the string is 300 mm
and the oscillation is stopped
immediately as it reaches reference
level ICON​

Answer 1

Answer:

T = 0.175 sec

Explanation:

The time period of a simple pendulum can be written as

T = Sqrt ( L/g)

Here L is the length of the pendulum and g is the gravity acceleration. It is important to note here that Time period does not depend on the mass of the bob

Now L = 300mm or 0.3 m

Putting the values

T = sart( 0.3/9.8)

T = 0.175 sec