I'm writing a paper about the physics of free throw shooting for my physics class. My teacher suggested including the biomechanics of it would be a good idea. To be honest I don't know anything about biomechanics. I've been searching on the internet about this topic but I couldn't find...
Homework Statement
Sam, whose mass is 71.0 kg , takes off down a 51.0 m high, 11.0 degree slope on his jet-powered skis. The skis have a thrust of 210 N . Sam's speed at the bottom is 41.0 m/s .
Homework Equations
I'm not sure which equation(s) to use.
Net Force= ma and some kinematic...
So is this what the free body diagram looks like then?
http://img851.imageshack.us/img851/3382/232.jpg
Dash marked lines are the components of normal force.
Homework Statement
A highway curve of radius 420m is designed for traffic moving at a speed of 73.0 km/hr .
What is the correct banking angle of the road?Homework Equations
V=(2(pi)(r)/T)
a=(v^2)/rThe Attempt at a Solution
I feel like this is an easy question but for some reason I can't get...
I figured out my mistake. For some reason I thought :
Net Force y equation was T1sin(theta1)+(T1cos(theta1))/(cos(theta2))=mg instead of
T1sin(theta1)+(T1cos(theta1))(sin(theta2))/(cos(theta2))=mg
Then T1(Sin(theta1)+(cos(theta1)(tan(theta2)=mg
T1=mg/(Sin(theta1)+(cos(theta1)(tan(theta2)...
I figured that T2 = (T1cos(theta1)/(cos(theta2)
Which makes the Net Force y equation T1sin(theta1)+(T1cos(theta1))/(cos(theta2))=mg
Then I just solved for T1 and I got T1=(mgcos(theta2)-T1sin(theta1))/(cos(theta2)
Which is not the right answer. It says my answer should not depend on...
Hanging Chandelier (Solved)
Homework Statement
A chandelier with mass m is attached to the ceiling of a large concert hall by two cables. Because the ceiling is covered with intricate architectural decorations (not indicated in the figure, which uses a humbler depiction), the workers who hung...