Force Constant Of Rubber Band

A rubber band has a spring constant of 45 n m.

Force constant of rubber band.

Individual 4 carbon backbone units are forced into rotational conformations that have longer end to end distances and this restricts the number of conformations states that are thermally accessible. The minus sign shows that this force is in the opposite direction of the force that s stretching or compressing the spring. The tension in the rubber band is the component of these two forces. The variables of the equation are.

The elongation of the rubber band is the product of these two forces this you measure with a ruler. When a rubber band is stretched some of the network chains are forced to become straight. F which represents force k which is called the spring constant and measures how stiff and strong the spring is and x is the distance the spring is stretched or compressed away from its equilibrium or rest position. When the rubber band is pulled by a force of 9 8 n how far will it stretch and what is its potential energy.

In this case the linear function fitting the straight part of the data gives a spring constant of 17 38 n m. The rotational spring constant for this thicker band is not surprisingly higher than the normal sized rubber band with a value of 4 92 x 10 4 n m. This can be done reversibly so that. The greater the weight the.

If you had rubber bands of the same cross sectional area then the one that stretches the least also has the greatest elastic modulus. Since we heated the band up h q 0. H e pv fd è q w pv fd if we heat the rubber band with a weight attached the force f is constant but the band contracts. The work w is f d p v the p v term is very small and h q f d p v f d p v q.

Say i have a rubber band wrapped around 2 pegs at a certain distance and at that distance i know the pounds of force per inch it is pulling at. Hooke s law and elastic potential. After you get the rubber band stretched just a little bit it is very spring like. The ultimate strength is measured by breaking the material.

The rubber band that stretches the least for a given weight applied force has the greatest spring constant.