Un pendul este suspendat de un ax cu o tijă subțire foarte ușoară. Date m=100 g, l=0,5m, g=9,8 m/s 2
a) Ce viteză minimă este necesară pentru ca pendulul să parcurgă cercul complet.
B) Aceeași întrebare dacă pendulul e suspendat cu un fir
C)Cât este raportul celor două viteze calculate?

A)

B)

C)

Explanation:

Given that a pendulum is suspended by a shaft with a very light thin rod.

Followed by the given information: m = 100 g, I = 0.5 m, g = 9.8 m / s²

We can determine the answer to these questions using angular kinematics.

Angular kinematics is just derived from linear kinematics but in different symbols, and expressions.

Here are the formulas for angular kinematics:

A) What is the minimum speed required for the pendulum to traverse the complete circle?

We can use the formula v = √gL derived from

B) The same question if the pendulum is suspended with a wire?

C) What is the ratio of the two calculated speeds?