2. Define Young Modulus and Force constant 3. A wire of cross sectional area of 6 x 10-5mand length 50cm stretches by 0.4mm under a load of 3000N. What is the Young's Modulus of the wire?
4. A spiral spring is compressed by 0.03m. Calculate the energy stored in the spring if its force constant is 300Nm-1

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.