Table of Contents
- 1 How do you calculate the stretch of a rubber band?
- 2 How do you calculate stretch force?
- 3 What is the Youngs modulus of a rubber band?
- 4 Is rubber an elasticity?
- 5 What is the minimum mass necessary to stretch the spring?
- 6 What force is required to stretch a steel wire?
- 7 What type of energy is in a rubber band?
- 8 What kind of energy is stored in the rubber band in Rolling toy?
- 9 How is the amount of stretch of a rubber determined?
- 10 Which is larger the elastic modulus of rubber or steel?
How do you calculate the stretch of a rubber band?
To describe the stretching action of rubber bands, and explore the connection between Hooke’s Law and Young’s modulus. A simple way to understand this formula is Y=stressstrain. The stress is the amount of force applied to the object, per unit area (F/A).
How do you calculate stretch force?
F = -kx. The proportional constant k is called the spring constant. It is a measure of the spring’s stiffness. When a spring is stretched or compressed, so that its length changes by an amount x from its equilibrium length, then it exerts a force F = -kx in a direction towards its equilibrium position.
What is the Youngs modulus of a rubber band?
=1.27 mPa
Young’s modulus calculated from this point is E=1.27 mPa. The longer length of the cold rubber band (see Figure 1) and lower value for E than at room temperature indicates that the elasticity of the rubber band has increased with cold.
How do you find the potential energy of a rubber band?
General Physics. The energy stored in the rubber band is determined by the bands k value (k is called the spring constant), and how far the rubber band is stretched. For each rubber band type, using the formula PE = ½kx2, calculate the “maximum” elastic potential energy (PE).
What happen when you stretch the rubber band and release it?
A rubber band is an elastic material in nature. When stretched, it changes its shape and when the applied force is removed, it regains its original shape. That is why a rubber band changes its shape even though it is a solid. Also, if excessive force is applied then the rubber band would break.
Is rubber an elasticity?
While stretching a rubber sample is the most common example of elasticity, it also occurs when rubber is compressed. Compression may be thought of as a two dimensional expansion as when a balloon is inflated. The molecular mechanisms that produce the elastic force are the same for all types of strain.
What is the minimum mass necessary to stretch the spring?
When a 0.200kg mass is added to the mass pan, the spring is stretched to the 0.320m-mark as shown in Figure 4. Therefore the displacement is 0.020m. The spring force must balance the weight of the added mass ( = 1.96N)….
| Rubber Band Experiment | |
|---|---|
| Mass Added (kg) | Displacement, x (m) |
| 0.400 | 0.55 |
| 0.500 | 0.80 |
What force is required to stretch a steel wire?
2×106N.
Which has more Youngs modulus steel or rubber?
The strain produced in rubber is much larger compared to that in steel. This means that steel has a larger value of Young’s modulus of elasticity and hence, steel has more elasticity than rubber.
Which material has greater Young’s modulus rubber or steel?
The modulus of elasticity of steel is greater than that of rubber because under the same stress. Modulus of elasticity is inversely proportional to strain for a given stress. If steel and rubber are under the same stress, the strain in steel is less than rubber . Hence steel is more elastic than rubber.
What type of energy is in a rubber band?
Elastic Potential Energy
Elastic Potential Energy A stretched rubber band has the potential to do work or change things. This form of energy is called elastic potential energy.
What kind of energy is stored in the rubber band in Rolling toy?
elastic potential energy
Because it is an elastic system, this kind of potential energy is specifically called elastic potential energy.
How is the amount of stretch of a rubber determined?
Stretching the rubber band has the same physical principles as a spring. As it is stretch, the rubber band applies a force to return to its equilibrium, or unstretched point. The amount of force can by calculated by Hooke’s Law,
How is the force of a rubber band determined?
Stretching the rubber band has the same physical principles as a spring. As it is stretch, the rubber band applies a force to return to its equilibrium, or unstretched point. The amount of force can by calculated by Hooke’s Law, F=k x,
What makes a rubber band to stretch more?
That force makes the rubber band get longer – it stretches. The greater the pull the longer it gets. In other words a bigger force makes the rubber band stretch more. Instead of a rubber band we could use a spring like the one in the picture.
Which is larger the elastic modulus of rubber or steel?
For example, a stress on a rubber band produces larger strain (deformation) than the same stress on a steel band of the same dimensions because the elastic modulus for rubber is two orders of magnitude smaller than the elastic modulus for steel.