Recent content by bazookajason

anyone?

hm do i use calculus? a= derivative of x

Homework Statement A particle of mass 2.00 kg moves under a force given by F~ = −(8.00 N/m)(xˆi + yˆj) whereˆi and ˆj are unit vectors in the x and y directions. The particle is placed at the origin with an initial velocity~v = (3.00 m/s)ˆi + (4.00 m/s)ˆj. a. After how much time will the...

Sure, however, that still leaves many unknowns. Including the velocity at the bottom and the max y.

its energy initally should be mg(h+x), because mgh is just the energy from the top of the ramp to the inital position of the ball

Homework Statement A ball of mass M and radius R has a moment of inertia of I =2/5MR. The ball is released from rest and rolls down the ramp with no frictional loss of energy. The ball is projected vertically upward o a ramp as shown in the diagram, reaching a maximum height ymax above the...

oh i see mv^2/r = ma a=5g :D thanks!

Homework Statement Harry Potter is sitting 2.0 meters from the center of a merry-go-round when Draco Malfoy casts a spell that glues Harry in place and then makes the merry-go-round start spinning on its axis. Harry has a mass of 50.0 kg and can withstand 5:0 g's of acceleration before...

Homework Statement A ball with initial velocity 0 and mass m starts at the top of a hemisphere and begins to slid down the frictionless side. The radius of the hemisphere is r. At what angle does the ball fall off the hemisphere?Homework Equations mgsintheta, mgcostheta, fn mv^2/rThe Attempt at...