Recent content by zjm7290

please guys! i have a final on this friday! anyone?

Homework Statement The function y(x, t) = (15.0 cm) cos(\pix - 12\pit), with x in meters and t in seconds, describes a wave on a taut string. What is the transverse speed for a point on the string at an instant when that point has the displacement y = 12.0 cm? Homework Equations I know...

thanks so much for all the help!

so basically the net accelelration is the vector quantity of where the end of one force connects to the other or the last line that would complete the triangle that would show the total force vectors in the system?

so you mean that since the 7.7N force is in the neg x direction, the acceleration in that same direction would also be negative?

so I now get F (net) in x direction = 4.474N and F(net) in y direction = 6.229N, I then use F=ma to get acceleration for both x and y directions so therefore the magnitude of acceleration in the system is a(net) in x direction + a(net) in y direction

so in the x direction I would have 9.0N + -7.7N*cos(54) and in the y direction I would have 0N + 7.7N*sin(54)? Or would I apply the negative sign after I figure out 7.7N*cos(54) since that's the total force in that direction with reference to the x axis

[SOLVED] Coefficient of Static Friction Problem Homework Statement A baseball player with mass m = 73 kg, sliding into second base, is retarded by a frictional force of magnitude 460 N. What is the coefficient of kinetic friction µk between the player and the ground? Homework Equations...

[SOLVED] Magnitude of acceleration problem Homework Statement Only two horizontal forces act on a 3.0 kg body that can move over a frictionless floor. One force is 9.0 N, acting due east, and the other is 7.7 N, acting 54° north of west. What is the magnitude of the body's acceleration...