Max Compression of Spring with Friction: Solve Now!

In summary, the conversation discusses the problem of a 1 kg puck sliding at 20m/s along ice and hitting a spring with a constant of 35N/M. It experiences a frictional force of 4.0 N opposing its motion and the question asks for the maximum compression of the spring. The solution involves using the equations for kinetic energy and work done against friction. The final answer is a maximum compression of 3.3m for the spring.
  • #1
kerrwilk
14
0
A 1 kg puck slides at 20m/s along ice, then hits and compresses a spring with a constant of 35N/M. When it first hits the spring, the puck experiences a frictional force of 4.0 N opposing its motion. What is the maximum compression of the spring?



Homework Equations

KE=1/2mv^2



The Attempt at a Solution

I can do these problems without the friction element but am unsure about how friction affects the outcome. Any help would be appreciated.
 
Physics news on Phys.org
  • #2
Initial KE = energy of spring + work done against friction
 
  • #3
Thanks for your help Delphi51. Is this how I would solve the problem?

.5mv*2=.5kd*2+Fd
.5(1)(20)*2=.5(35)d*2+(4)d
200=17.5d*2+4d
0=17.5d*2+4d- 200
d= 3.3m (quadratic formula)

Thanks again.
 

FAQ: Max Compression of Spring with Friction: Solve Now!

What is the significance of finding the maximum compression of a spring with friction?

Finding the maximum compression of a spring with friction allows us to understand the limitations of the spring and predict its behavior in various situations. This information is crucial in engineering and designing systems that involve the use of springs.

How do you solve for the maximum compression of a spring with friction?

To solve for the maximum compression of a spring with friction, we can use the equation F = -kx - μmg, where F is the force applied to the spring, k is the spring constant, x is the displacement of the spring, μ is the coefficient of friction, and mg is the weight of the object attached to the spring. By setting this equation equal to zero and solving for x, we can determine the maximum compression of the spring.

What factors affect the maximum compression of a spring with friction?

The maximum compression of a spring with friction is affected by several factors, including the spring constant, coefficient of friction, weight of the object attached to the spring, and the surface on which the spring is placed. These factors can impact the amount of force required to compress the spring and the amount of friction acting against the spring.

How does the presence of friction impact the maximum compression of a spring?

The presence of friction can significantly affect the maximum compression of a spring. Friction acts against the motion of the spring, making it more challenging to compress and reducing the maximum compression that can be achieved. Thus, it is essential to consider the effects of friction when designing systems that involve the use of springs.

Can the maximum compression of a spring with friction be increased?

The maximum compression of a spring with friction can be increased by reducing the friction acting against the spring. This can be achieved by using lubricants or smoother surfaces for the spring to slide on. Additionally, increasing the spring constant can also help in achieving a higher maximum compression.

Back
Top