Newton's Laws of Motion
Not what you're looking for?
An athlete whose mass is m is performing weight-lifting exercises. Starting from the rest position, he lifts, with constant acceleration, a barbell that weighs w. He lifts the barbell a distance of x in a time of t.
Use Newton's laws to find the total force that his feet exert on the ground as he lifts the barbell.
Take free fall acceleration to be g.
Purchase this Solution
Solution Summary
This problem of an athlete lifting a barbell has been solved using Newton's second law to find the total force that his feet exert on the ground as he lifts the barbell.
Solution Preview
When the athlete is lifting the weight, the forces acting on the ground through his feet are :
a) His own weight = mg
b) ...
Purchase this Solution
Free BrainMass Quizzes
The Moon
Test your knowledge of moon phases and movement.
Intro to the Physics Waves
Some short-answer questions involving the basic vocabulary of string, sound, and water waves.
Introduction to Nanotechnology/Nanomaterials
This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.
Variables in Science Experiments
How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.
Classical Mechanics
This quiz is designed to test and improve your knowledge on Classical Mechanics.