Lab Assignment: Forces and Friction Laboratory: Preparation
- Read all directions before beginning the lab.
- This virtual lab can be found by clicking here.
- Prepare your data tables in your spreadsheet. The columns should be labeled as below:
EXPERIMENT I: Static Friction
Table for Wooden Surface: No. Mass of the block(kg) Applied force (F) at which the block begins to move Maximum value of static friction(f) Coefficient of static friction 1 2 3 4 5 6 No. Mass of the block(m kg) Applied force (F) at which the block begins to move Maximum value of static friction(f) Coefficient of static friction 1 2 3 4 5 6
Mean =
Table for Glass Surface:
Mean =
EXPERIMENT II: Kinetic Friction
Table for Wooden Surface: No. Mass of the block(kg) Applied force (F) at which the block moves with a constant velocity Value of kinetic friction (f) Coefficient of kinetic friction 1 2 3 4 5 6 No. Mass of the block(kg) Applied force (F) at which the block moves with a constant velocity Value of kinetic friction (f) Coefficient of kinetic friction 1 2 3 4 5 6
Mean =
Table for Glass Surface:
Mean =
No. Mass of the block (m kg) Weight of masses in the Mass Hanger Acceleration (a) Force on the block F=ma 1 1 2 1 3 1 4 1 5 1 6 1
EXPERIMENT-III (Determination of force acting on the Block1)
Part-1
EXPERIMENT-III (Determination of force acting on the Block1&2 )
Part-2
No. Mass of the block (m kg) Weight of masses in the Mass Hanger Acceleration (a) Force on the block F=ma 1 1 2 1 3 1 4 1 5 1 6 1
4. Investigate the virtual lab apparatus.
A. The lab contains wooden blocks of standard masses, spring balance, wooden surface, glass surface and slotted weights.
B. In experiment I, when force is applied to the block, two arrow marks-- namely frictional force arrow and applied force arrow--appear at the left and right side of the block respectively. The force at which the block jerks is shown by the spring balance through a pop-up.
C. In experiment II, the force at which the block moves at constant velocity is indicated by two equal length arrow marks that appear in the opposite direction. The value of the force is displayed in the spring balance through a pop-up.
D. In experiment III, when the loaded mass hanger pulls the blocks that are connected to it with a hook, the acceleration value of the wooden blocks are displayed. The force exerted on the blocks is shown using three arrow marks-- namely, ‘Friction force’ arrow toward the left, ‘Applied force’ arrow to the right, and ‘Net force’ arrow on the top of the block.