A barbell spins around a pivot at its center at A. The barbell consists of two small balls, each with mass 450 grams (0.45 kg), at the ends of a very low mass rod of length d = 20 cm (0.2 m; the radius of rotation is 0.1 m). The barbell spins clockwise with angular speed 120 radians/s.

What is the speed of ball 1?

The speed of ball is 12

Explanation:

Given:

Mass of ball kg

Radius of rotation m

Angular speed

Here barbell spins around a pivot at its center and barbell consists of two small balls,

From the formula of speed in terms of angular speed,

Where speed of ball

Therefore, the speed of ball is 12

higher potential

explanation:

because it is in a high speed so it must move into a of high potential

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.