| Difficulty | Secondary School | High school/other |
| ★ | Basic | Easy |
| ★★ | Demanding | Basic |
| ★★★ | Demanding | |
| ★★★★ | Difficult | |
| ★★★★★ | Very difficult |
Determine the mass of the load to be lifted.
Answer: 187,2 g
Exercise 3.11 B
| Difficulty | Secondary School | High school/other |
| ★ | Basic | Easy |
| ★★ | Demanding | Basic |
| ★★★ | Demanding | |
| ★★★★ | Difficult | |
| ★★★★★ | Very difficult |
Determine the mass of the yellow metal bar.
Answer: 109,9 g
Exercise 3.11 C
| Difficulty | Secondary School | High school/other |
| ★ | Basic | Easy |
| ★★ | Demanding | Basic |
| ★★★ | Demanding | |
| ★★★★ | Difficult | |
| ★★★★★ | Very difficult |
There is a wire wrapped around a metal bar in the video. Determine the coefficient of static friction between the wire and the metal bar.
Tip: Google "capstan equation"
Answer: 0,11
Exercise 3.11 D
| Difficulty | Secondary School | High school/other |
| ★ | Basic | Easy |
| ★★ | Demanding | Basic |
| ★★★ | Demanding | |
| ★★★★ | Difficult | |
| ★★★★★ | Very difficult |
Demonstrate the validity of the laws of statics by comparing the measurement results with the values obtained by calculation.
Answer: It is stated that the measured force values are very close to the calculated values.
Exercise 3.11 E
| Difficulty | Secondary School | High school/other |
| ★ | Basic | Easy |
| ★★ | Demanding | Basic |
| ★★★ | Demanding | |
| ★★★★ | Difficult | |
| ★★★★★ | Very difficult |
Show according to the rules of the laws of statics, that the system is in balance with respect to forces.
Answer: System is in balance with respect to forces.
Exercise 3.11 F
| Difficulty | Secondary School | High school/other |
| ★ | Basic | Easy |
| ★★ | Demanding | Basic |
| ★★★ | Demanding | |
| ★★★★ | Difficult | |
| ★★★★★ | Very difficult |
Show by calculation that the torque balance is valid (rotational analog of Newton´s second law for a rigid body).
Answer: Torque balance is valid
Exercise 3.11 G
| Difficulty | Secondary School | High school/other |
| ★ | Basic | Easy |
| ★★ | Demanding | Basic |
| ★★★ | Demanding | |
| ★★★★ | Difficult | |
| ★★★★★ | Very difficult |
Determine the minimum buckling force theoretically and experimentally to a rod that is supported in four different ways. Compare the results obtained with each other. Also draw theoretical buckling images and compare them to the buckling seen in the video.
Answer: Theoretical and experimental buckling forces are approximately equal.
