Friction On Inclined Plane

ATGE 1043 ENGINEERING SCIENCE

LAB REPORT 1 FRICTION ON INCLINED PLANE

DIPLOMA IN TECHNOLOGY (MECHATRONICS ENGINEERING) DMH1

NAME : DATE :

EXPERIMENT 1 Friction on inclined plane Objective To determine the coefficient of friction under static condition between various material and steel surface. Theory

tan Ø = FR = µ tan Ø = µ = coefficient of friction. Apparatus Inclined plane friction apparatus LS-1206, steel block, plastic block, brass block, wood block, aluminium block.

Procedure 1. The apparatus was setup in a horizontal position.

2. A specimen was chosen and its weight, R are record. 3. The specimen was than place on the horizontal plane,

somewhere in the mid span. 4. The plan was elevate slowly until the specimen start to move even with a small movement. 5. The angle was record in Table 1. 6. Step 1 -5 was repeat for other specimens.

Table of static coefficient of friction for “Dry” surfaces Steel on steel Plastic/PVC on steel Brass on steel Wood on steel Aluminium on steel

0.55 0.044 0.5 0.4 0.6

Result Material

Steel on steel Plastic/PVC on steel Brass on steel Wood on steel Aluminium on steel

weig ht

285g 94g 318g 130g 120g

Angle recorded, Ø avera st nd 1 2 ge 11 13 12 17 15 25

Coefficient, tan Ø

0.21

19 16 21

18 15.5 23

0.32 0.28 0.47

20 19 Table 1

19.5

0.35

Discussion The results from the experiment are not the same with the result from the table give. This is caused by various reasons. First is the material used in the experiment are not the same with the one in the table, this caused the difference with the result obtained. Than is the apparatus used are not in mint condition. The plan is used over and over and this caused the plan to be smoother compared to when it was newly bought.

Conclusion : The coefficient varies with different type of material. Rougher surface will have higher coefficient of friction will smother surface will have lower coefficient.