What is the work done by the force F? (Note: sin 60o = 0.87; cos 60o = 0.50. Ignore friction and the weights of the pulleys.)
Submitted by: Administrator1. 50 J
2. 100 J
3. 174 J
4. 200 J
Answer: D
Explanation: Work is the product of force and distance. The easiest way to calculate the work in this pulley problem is to multiply the net force on the weight mg by the distance it is raised: 4 kg x 10 m/s2 x 5 m = 200 J. Therefore, answer choice D is the best answer.
Submitted by: Administrator
2. 100 J
3. 174 J
4. 200 J
Answer: D
Explanation: Work is the product of force and distance. The easiest way to calculate the work in this pulley problem is to multiply the net force on the weight mg by the distance it is raised: 4 kg x 10 m/s2 x 5 m = 200 J. Therefore, answer choice D is the best answer.
Submitted by: Administrator
Read Online MCAT (Medical College Admission Test) Job Interview Questions And Answers
Top MCAT (Medical College Admission Test) Questions
| ☺ | Evaporation occurs when molecules at the surface of a liquid overcome the attractive forces of the liquid.This occurs when molecules within the liquid attain a sufficient amount of: |
| ☺ | A 15.0-eV photon collides with and ionizes a hydrogen atom. If the atom was originally in the ground state (ionization potential =13.6 eV), what is the kinetic energy of the ejected electron? |
| ☺ | When 47Be undergoes radioactive decay by electron capture (a form of ß+ decay), the resulting nucleus is: |
| ☺ | What is the work done by the force F? (Note: sin 60o = 0.87; cos 60o = 0.50. Ignore friction and the weights of the pulleys.) |
Top School Education Categories
| ☺ | Mathematics Interview Questions. |
| ☺ | GMAT Interview Questions. |
| ☺ | Metallurgy Interview Questions. |
| ☺ | Polio Eradication Officer Interview Questions. |
| ☺ | Physical Education Interview Questions. |
