Q1. For safety in climbing, a mountaineer uses a nylon rope that is 69 m long and 1.0 cm in diameter. Whilst supporting a 96-kg climber, the rope elongates 1.4 m. Find its Young's modulus.
Q2. A 52 kg student is standing on a 26 kg cart that is free to move in any direction originally, the cart is moving with a velocity of 1.2 m/s [S] relative to the floor. The student then walks on the cart and has a net velocity of 1.0 m/s [W] relative to the floor.
Use the vector diagram to determine the estimated final velocity of the cart.