Answer:
Explanation:
We define the linear charge density as:

Where L is the length of the rod, in this scenario the semicircle's length is L = πr
The potential at the center created by a differential element of charge is:

where k denotes Coulomb's constant
r signifies the distance from dq to the center of the circle
Thus.

The potential at the semicircle's center
To address this question, we will utilize concepts linked to centripetal force, aligning it with the static frictional force acting on the object. Using this relationship, we can derive the velocity and input the known values. The defined values are:



The maximum velocity can be determined using centripetal force,

Should be equal to,




As a result, the highest speed achievable through the arc without slipping is 9.93m/s
Answer:

Explanation:
Strain is defined as the ratio of an object's dimensional change when subjected to a force:

where
indicates the alteration in length of the object
signifies the object's initial length
In this case, we have
and
, hence the strain is
