# Hookes Law was discovered by an English philosopher by the name of Robert Hooke. Robert Hooke was born in 1635 in Freshwater in the Isle of Whight, England.

## Presentation on theme: "Hookes Law was discovered by an English philosopher by the name of Robert Hooke. Robert Hooke was born in 1635 in Freshwater in the Isle of Whight, England."— Presentation transcript:

Hookes Law was discovered by an English philosopher by the name of Robert Hooke. Robert Hooke was born in 1635 in Freshwater in the Isle of Whight, England. His parents were John Hooke and Cecily Gyles. Robert was the last of four children. He had two brothers and two sisters.

He grew up around the church; his father was dedicated to serving the church. His brothers were both ministers. As a child he was always sick. He contracted small pox; he was left horribly disfigured because of it.

Later Hooke was hired as a chimical assistant where he met Robert Boyle (you may know him by Boyles Law). Hooke got lots of inspiration from Boyle. Robert Hooke discovered Hookes Law in 1676. It states that F ~ k(delta)x

F ~ k(delta)x -F = force [Newtons; N] -K= spring constant [n/m] -Delta= change in -x= distance [Meters, m]

Force is proportional to distance. 50 grams100 grams150 grams

Hookes Law states that elastic materials will regain their original shape after being stretched out until they have reached their elastic limit.

While you are jumping, you will experience two different stages. The first is the freefall. The cord has not been extended to full length, so the jumper is only experiencing a downward force from their weight. Measured in weigh and force of gravity (m/s ) 2

The second force a jumper will experience is when the velocity is equal that of an object freefalling; that means the cord is extended to its full length which will pull the jumper back up. Now there is a downward force and an upward force exerted from the cord. Measured in delta(x), which is the change in distance.

After the jumper has passed the freefall stage, the cord acts as a spring which is where Hooke's Law comes in. If the mass (in this case, the jumper) is attached to the end of a spring, the downward force (gravitational) must be balanced by the upward force (restoring) of the spring (bungee cord)in unison to keep everything balanced.

Is basically a free fall jump from a high structure. Usually bridges, buildings. The jumper is attached to a thin latex cord. The cord will stretch and snap backwards, pulling the jumper back up. It will continue to bounce up and down until all the energy is dissipated.

In order to make sure your bungee cord is safe and will perform properly: Make sure the cord is soft in springy, otherwise it will snap when it hits its elastic limit. Make sure the cord is safely attached to the harness, otherwise it wont support any of your weight.

Remember to always have a professional with you when you go bungee jumping, and do not try to do this at home.