drag: Drag force experiment

In fastR: Data sets and utilities for Foundations and Applications of Statistics by R Pruim

Description

The data come from an experiment to determine how terminal velocity depends on the mass of the falling object. A helium balloon was rigged with a small basket and just the ballast to make it neutrally buoyant. Mass was then added and the terminal velocity is calculated by measuring the time it took to fall between two sensors once terminal velocity has been reached. Larger masses were drop from higher heights and used sensors more widely spaced.

Usage

data(drag)

Format

A data frame with 42 observations on the following 5 variables.

time

time (in seconds) to travel between two sensors

mass

net mass (in kg) of falling object

height

distance (in meters) between two sensors

velocity

average velocity (in m/s) computed from time and height

force.drag

calculated drag force (in N, force.drag = mass * 9.8) using the fact that at terminal velocity, the drag force is equal to the force of gravity

Source

Calvin College physics students under the supervision of Professor Steve Plath.

Examples

data(drag)
with(drag,force.drag / mass)
xyplot(velocity ~ mass, drag)

fastR documentation built on May 2, 2019, 5:53 p.m.