Work & Energy: Solving Problems with v0, k, m, g

  • Thread starter Thread starter jrdwagas
  • Start date Start date
  • Tags Tags
    Energy Work
AI Thread Summary
The discussion focuses on solving a physics problem involving work and energy, specifically using variables such as initial velocity (v0), spring force constant (k), mass (m), and gravity (g). Participants are seeking clarification on various equations that relate these variables to the displacement (x) in spring systems. The equations presented include relationships derived from conservation of energy principles, where kinetic energy is converted into potential energy. There is an emphasis on understanding the correct application of these formulas to solve the problem effectively. Overall, the thread aims to enhance comprehension of the concepts of work and energy in physics.
jrdwagas
Messages
1
Reaction score
0
Need help on problem...See attachment

New on the topic and the SUB only knows as much as we do.
Might be a lot to cover, but thanks anyway. (Also, please explain if you can)

v0-intitial velocity
sqr-square root
k-spring force constant
g-gravity
m-mass

Choices
1. x = v0*sqr((mg)/k)

2. x = v0*m/(kg)

3. x = v0*(mg)/k

4. x = v0*sqr(k/(mg)

5. x = v0*k/(gm)

6. x = v0^2/(2g)

7. x = v0*sqr(m/k)

8. x = v0*sqr(k/m)

9. x = v0^2/(2m)

10. x = v0*(mk)/g
 

Attachments

  • 10-14-2010 5;51;35 PM.jpg
    10-14-2010 5;51;35 PM.jpg
    31 KB · Views: 425
Physics news on Phys.org
Use conservation of energy. All the kinetic energy of the block (1/2) mv^2 goes into potential energy of the spring (1/2)kx^2
 

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Kinetic Energy and Work/ Work depends on acceleration?
Replies
3
Views
3K
Spring Problem Involving Variables and Constants Only
Replies
3
Views
1K
How Does the Positive Spring Constant k = F/x Apply in Bow Mechanics?
Replies
4
Views
2K
Difficulty in deciding when to apply work energy theorem
Replies
2
Views
1K
Calculating the spring force constant K
Replies
14
Views
2K
Calculate total mechanical energy of a frictionless spring
Replies
5
Views
2K
Inelastic Collisions - Two Boxes One Spring
Replies
17
Views
3K
Energy Conservation of a Vertical Spring
Replies
5
Views
2K
Critically Damped Bathroom Scale
Replies
2
Views
3K
Time period of SHM & Energy conservation in pulley-spring-block system
Replies
24
Views
3K

Hot Threads

Recent Insights

Back
Top