Wednesday
October 22, 2014

Homework Help: Physics: Rotational Motion

Posted by Anonymous on Thursday, October 18, 2012 at 11:48am.

A 0.005kg bullet travelling horizontally with a speed of 1000m/s enters an 18kg door, embedding itself 10cm from the side opposite the hinges as in figure. The 1m wide door is free to swing on the hinges.

a) Before it hits the door, does the bullet have angular momentum relative the door’s axis of rotation? Explain.

b) Is mechanical energy conserved in this collision?

c) If the door opens immediately after collision, calculate the angular speed the door swing. The door has the same moment of inertia as a rod with axis at one end.

d) Calculate the energy of the door-bullet system and determine whether it is less or equal to the kinetic energy of the bullet before collision.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

College physics - A 0.006 00-kg bullet traveling horizontally with a speed of 1....
physics - A 0.005-kg bullet traveling horizontally with a speed of 1.00 103 m/s ...
Physics - A 0.006-kg bullet traveling horizontally with a speed of 1.00 103 m/s ...
physics - In Figure (1), a 3.50 g bullet is fired horizontally at two blocks at ...
physics - A 3.50 g bullet is fired horizontally at two blocks at rest on a ...
physics - a bullet travelling horizontally at a speed of 350 m/s hits a board ...
Physics - A uniform 22 kg door that is 2.5 m high by 0.80 m wide is hung from ...
Physics - A bullet of mass 10g travelling horizontally at a speed of 100m/s ...
Physics- so confused!! - A bullet with a mass of 5.40 g is fired horizontally at...
physics - A rocket cruising past earth at 0.800c shoots a bullet out the back ...

Search
Members