Question

A pendulum oflength 2m lift at p.When it reaches q

Answer 1

Samaritan

The answer seems to be 6m/s.

This is a problem in physics that potential energy of the pendulum is converted into kinetic energyand is dissipated into the air.

Therefore, PE = KE = LOSS OF ENERGY………………………………….(1).

According to the problem, energy loss is 10 % of PE=0.10PE.

So, equation 1 becomes,

PE + KE+0.1 PE=0.9PE  =KE.

THEREFORE,

0.9 Mgh =0.5 V2. V2 = 1.8 gh. V= speed of the lowest point.

h= length of the pendulum= 2 m, g = 9.81 m/sec2.

putting the values of  g and h.

Velocity at B, V = 5.94 m/sec

Read more on Brainly.in - https://brainly.in/question/6663215#readmore

Answer 2

6m/sec is the answer

I hope this will help you

If helpful then please select my answer as brainliest answer

And also follow me ❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️❤️