"ut omnes discant quod erat demonstrandum"

Sat, Oct-19
Sun, Oct-20
Mon, Oct-21 NO SCHOOL
Tue, Oct-22 Mouse Trap Car Prelim
Wed, Oct-23 Mouse Trap Car Prelim
Thu, Oct-24 Mouse Trap Car Prelim
Fri, Oct-25 Mouse Trap Car Finals
Sat, Oct-26
Sun, Oct-27
90%
LED BOARD 2020 2019
1.1 Measurement 86
1.2 Math Foundations 73
1.3 Vector Addition 90
2.1 Uniform Acceleration 0
2.2 Graphing Motion 0
2.3 Newton's Laws 0
3.1 Force Body Diagrams 0
3.2 Parallel Forces 0
4.1 Projectile Motion 0
4.2 Circular Motion 0
4.3 Rotational Motion 0
5.1 Work Eff./Power 0
5.2 Energy Conservation 0
5.3 Momentum 0
6.1 Wave Mechanics 0
7.1 Sound Characteristics 0
7.2 Sound Intensity 0
7.3 Doppler Effect 0
7.4 Strings & Tubes 0
8.1 Photoelectric Effect 0
9.1 Fluid Dynamics 0
Current Class Leader: TIE

Mastered each JEDI Trial!
Noah Graalfs
Alec Knepper
Peter Schumacher
Taylor Tiffin
Lukas Zerajic
Board Battles Theme Song!
© Peter Weihs & Colby Knight 2013
Bookmark this website on the home screen of your mobile device. Don't know how? Watch here!
 

Inquiry: Boom/Chain Problems

Purpose: To examine and calculate boom/chain problems.

Procedure:

  • To begin make sure the boom is at a 90 degree angle with the upright support.

  • A pulley will be attached to the middle of the boom to give the boom more weight.

  • Draw the FBD. ( boom=94.3 g, pulley=101.7g, mass=1000g)

  • Calculate all remaining forces on the FBD.

  • Measure the chain force and the force acting ALONG the boom.

  • Compute % errors. Your calculated values will be the theoretical values.

  • Repeat the experiment but change the angle from 90 degrees.

  • Boom Chain problems are greatly simplified if we assume the mass of the boom is negligible and the only mass is on the end.

Inquiry Questions:

1.) A boom/chain is setup as shown below, where angle RPS is 37.0 degrees. The weight (W) is 1730 N and the uniform mass boom weighs 762 N.

a.) What is the tension force in the chain?

b.) What is the force by the pole acting on point R and at what angle is it working with respect to straight down the boom?

2.) A boom/chain is setup as seen below. Angle SRP is 60.0 degrees, angle RPS is 80.0 degrees. The weight (W) is 1960 N and the uniform mass boom weighs 1220 N.

a.) What is the tension force in the chain?

b.) What is the force by the pole acting on point R and at what angle is it working with respect to straight down the boom?

3.) The wrecking ball below has a weight of 4800 N and the uniform boom weighs 3600 N.

a.) Calculate the tension in the support cable?

b.) What is the magnitude of the force exerted on the lower end of the boom by the hinge at point P and what is the direction with respect to directly down the boom?