Homework Statement
Hey, I was studying this problem and solution (by Rudy Arthur):
http://www.feynmanlectures.info/solutions/maximum_angle_deflection_sol_1.pdf
What I wasn't sure was why this solution only works for m<M. At which point did we restrict ourselves to m<M. How about when...
Homework Statement
Mechanics of Deformable Media (Bhatia and Singh), 5.2:
Consider a long rod of elastically isotropic material of L standing vertically in a vacuum in equilibrium under the gravitational field of the earth, then:
(i) What are the boundary conditions for \sigma_{ij} on the...
q1 and q2 are the charges of the spheres, which is +1.60 micro C. r is the distance between the charges, which is double the original spacing between the spheres. Keep in mind that the two k's you have written in the equations above are not the same!
Anyways, you have the force F exerted onto...
Cursed,
The weight of the mass is completely irrelevant for this question. The mass is on some horizontal surface, and by Newton's Third Law, it is canceled out by a normal force.
The unknown here is what force the person exerts. We'll call this Fext. Only the horizontal component of this...
For the hockey question, do use trig. Break the velocities for both players into vertical and horizontal components.
For the player going in the x-direction: p_x = mv
For the other player: p_x = -mvcos45 and p_y = mvsin45
Also, remember that momentum is conserved for both the horizontal...
Assuming that the acceleration you have in your Acceleration vs Time graph is the net acceleration, just multiply the acceleration by the mass of whatever it is you are studying to get a Net Force vs Time graph. F=ma ;).
Cursed, in your solution you subracted a vertical force, the weight of the mass, by the friction, a horizontal. This is invalid. The weight is in the vertical direction, and the force of friction always points in the direction opposite of the motion, which is in this case horizontal. To subract...