University:
Colgate University
Course:
PHYS 111 | Fundamental Physics I
Academic year:

2022
Views:

219

Pages:

8
Author:

texans105bvn

Sketches are all the way at the bottom Activity 1.1.2 Simple Machines Practice Procedure Answer the following questions regarding simple machine systems. Each question requires proper illustration and annotation, including labeling of forces , distances , direction, and unknown values. Illustrations should consist of basic simple machine functional sketches rather than realistic pictorials. Be sure to document all solution steps and use proper units. All problem calculations should assume ideal conditions and no friction loss. Simple Machines - Lever A first class lever in static equilibrium has a 50 lb resistance force and 15 lb effort force. The lever ’s effort force is located 4 ft from the fulcrum . 1. Sketch and annotate the lever system described above. 2 . What is the actual mechanical advantage of the system? ula Ama-fr/fe Substitute / So 50/15/ Final Answer 3.3 50 lb 151b 3. Using static equilibrium calculations, calculate the length from the fulcrum to the resistance force. 4ft Substitute / Solve Formula Final Answer 50lb x dr =1 5 x 4 Dr=60 x lb/50 Ama=ima 1.2 ft Fr/fe=de/dr 60 divided by 50