Answer:
4.62N
Explanation:
Since the motion covers 1 circle (or 2π rad) per 0.8 seconds, its angular velocity is
Radius of the circular motion is r = 75 cm or 0.75m. We can calculate the centripetal acceleration of this mass
From Newton's 2nd law, we calculate the centripetal force, which is also the tension of the string:
The resultant of the vectors is .
<h3>What is a resultant vector?</h3>
A resultant vector is the vector sum of two or more vectors.
The given vectors;
- Height of vector A = HA
- Height of vector B = HB
- Height of vector C = HC
The height of vector B is the resultant of the three given vectors.
When the vectors are drawn from head to tail, the vector B forms the resultant of the two other vectors (A and C).
Thus, the resultant of the vectors is .
Learn more about resultant vectors here: brainly.com/question/110151
I'd say the atmosphere plays a role in all of these but if I had to choose one it would be D
Μk=Fk/Fn
Fk=μk*Fn
μk - coefficient of kinetic friction
Fk- force of kinetic friction
Fn - normal force