Intro to Angular Collisions Video Lessons

Concept

# Problem: A 510.0 -g bird is flying horizontally at 2.30  m/s , not paying much attention, when it suddenly flies into a stationary vertical bar, hitting it 25.0 cm below the top (the figure ). The bar is uniform, 0.760 m long, has a mass of 1.90 kg , and is hinged at its base. The collision stuns the bird so that it just drops to the ground afterward (but soon recovers to fly happily away).a. What is the angular velocity of the bar just after it is hit by the bird?b. What is the angular velocity of the bar just as it reaches the ground?

###### FREE Expert Solution

In this problem, we'll use the concept of conservation of angular momentum.

$\overline{){{\mathbf{L}}}_{{\mathbf{i}}}{\mathbf{=}}{{\mathbf{L}}}_{{\mathbf{f}}}}$

a.

From the law of conservation of angular momentum:

###### Problem Details

A 510.0 -g bird is flying horizontally at 2.30  m/s , not paying much attention, when it suddenly flies into a stationary vertical bar, hitting it 25.0 cm below the top (the figure ). The bar is uniform, 0.760 m long, has a mass of 1.90 kg , and is hinged at its base. The collision stuns the bird so that it just drops to the ground afterward (but soon recovers to fly happily away).

a. What is the angular velocity of the bar just after it is hit by the bird?

b. What is the angular velocity of the bar just as it reaches the ground?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Intro to Angular Collisions concept. You can view video lessons to learn Intro to Angular Collisions. Or if you need more Intro to Angular Collisions practice, you can also practice Intro to Angular Collisions practice problems.