Download presentation

Presentation is loading. Please wait.

Published byReed Allerton Modified over 3 years ago

1
Exploring the Physics of Rock Climbing and Sky Diving - Nathan Williamson -

2
Kinematics Concepts Acceleration is a derivative of Velocity Velocity is a derivative of Position Terminal Velocity Acceleration x Time Drag Coefficient

3
Rock Climbing

4
Skydiving - Reaching Terminal Velocity The SLOPE is the Velocity 65.2 m/s = 148 mph

5
Parachute Deployment - Velocity Change The AREA = a dt = v Max Acc = 3.7 g’s! Somersaults Final Chute Velocity

6
Velocity Change From Parachute (14.4g x sec) – (8.3g x sec) = 6.1g x sec v = (6.1g x sec) x 9.8m/s/s = 59.78m/s Subtract Velocity Change from Terminal Velocity 65.2m/s - 59.78m/s = 5.42m/s New Velocity (12 mph) Most of the Terminal Velocity lost when chute deployed Area below 1 gTotal Area vv

7
Drag Coefficient Force of Drag: F D = -bv 2 where b is the drag coefficient As velocity increases, the magnitude of the resistive force approaches the gravitational force: mg – bv 2 = 0 Therefore, terminal velocity: v T = (mg / b) 1/2 Giving average drag coefficient of: b = mg / v T 2 b = 160kg x 9.8m/s/s / (65.2m/s) 2 = 0.369 (Total Mass)

8
Drag Coefficient Typical Drag Coefficients: Single Skydiver – 1.0-1.4 Bicyclist – 0.9 Hummer H2 – 0.57 Ferrari Testarossa – 0.36 Smooth Sphere – 0.1 Learjet 24 – 0.022

Similar presentations

OK

Part 1 Gravity and Free Fall Free Fall An object is in free fall if it is accelerating due to the force of gravity and no other forces are acting on.

Part 1 Gravity and Free Fall Free Fall An object is in free fall if it is accelerating due to the force of gravity and no other forces are acting on.

© 2018 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Download ppt on internet services for class 10 Ppt on case study in psychology Ppt on limitation act pakistan Ppt on fair and lovely product Download ppt on automatic street light system Ppt on current economic issues in india Ppt on railway track and structures Ppt on synthesis and degradation of purines and pyrimidines bonding Ppt on object-oriented technologies Ppt on obesity prevention foundation