Energy and Work related - Did i do this right?

  • Thread starter Thread starter mks
  • Start date Start date
  • Tags Tags
    Energy Work
AI Thread Summary
The discussion covers key concepts in physics related to energy and work. It defines potential energy as stored energy, with gravitational potential energy resulting from work against gravity. Work is described as the transfer of mechanical energy, while kinetic energy represents the energy of motion. The work-kinetic energy theorem explains the relationship between work done on an object and its kinetic energy. Additionally, the distinction between conservative and non-conservative forces is highlighted, emphasizing their impact on energy transfer.
mks
Messages
10
Reaction score
0
1. Potential energy- energy that is stored in by an object.
2. Gravitational potential energy- achieved by doing work against the force of gravity.
3. Work- the transfer of mechanical energy.
4. Kinetic energy- the energy of motion.
5. Mechanical energy- combination of kinetic and potential energy.
6. Work-Kinetic energy theorem- the special relationship between doing work on an object and the resulting kinetic energy of the object.
7. Negative work- removes energy from an object.
8. Positive work- adds energy to an object.
9. Conservative force- when a force does work on an object and the amount of work done is independent of the path taken.
10. Non-conservative force- when a force does work on an object and the amount of work done is path-dependent.
 
Physics news on Phys.org
someone answer please.
 
*Bump*

...
 
What is your level of education?
 
high school, grade 11
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
Back
Top