• Support PF! Buy your school textbooks, materials and every day products Here!

Kinetics of a Particle: Work and Energy

  • Thread starter Suitengu
  • Start date
46
0
1. Homework Statement
The cyclist travels to a point A, pedaling until he reaches a speed Va = 4m/s. He then coasts up freely the curved surface. Determine how high he reaches up the surface before he comes to a stop. Also, what are the resultant normal force on the surface at this point and his acceleration? The total mass of the bike and man is 75 kg. Neglect friction, the mass of the wheels and the size of the bicycle.


2. Homework Equations
a is 4m from diagram.


3. The Attempt at a Solution

I found y first using the work-energy theorem and solve for x using the equation of the path given. I was then stuck at calculating the angle at this coordinate so I sought out help. The individual told me to take the square root of y/x and take the arctan of that. To my surprise, I worked with this value using normal and tangent coordinates and it worked. I would like if someone could explain to me why it was done like this as I am still lost. Thanks in advance.
 

Attachments

Answers and Replies

Related Threads for: Kinetics of a Particle: Work and Energy

  • Last Post
Replies
5
Views
2K
Replies
0
Views
6K
Replies
0
Views
1K
Replies
1
Views
4K
Replies
2
Views
3K
Replies
7
Views
1K
Replies
9
Views
796
Replies
6
Views
2K
Top