Choice-'b' says the formula for kinetic energy in words.
KE = (1/2) · (M) · (S²)
The answer is A. The outer lines change as it moves
We know, Period = 1/frequency = 1/20 sec.
So, your final answer is 0.05 sec
Hope this helps!
Answer:
Explanation:
The angular momentum of that same disk-sphere remains unchanged the very same way before and after the impact of the collision when the clay sphere adheres to the disk.
= constant.
The overall value of such moment of inertia is now altered when the clay spherical sticks. Due to the inclusion of the clay sphere, the moment of inertia will essentially rise. As a result of this increase, the angular speed w decreases in value.
Recall that:
The Kinetic energy is given by:

where;
is constant and w reduces;
As a result, just after the collision, the system's total kinetic energy decreases.