Recent content by dorian_stokes

It's asking for height in m. The right side has the greater density. The total height was 20cm.

Homework Statement A block of mass 20 g sits at rest on a plate that is at the top of the fluid on one side of a U-tube as shown below. The U-tube contains two different fluids with densities ρ1 = 1090 kg/m3 and ρ2 = 595 kg/m3 and has a cross sectional area A = 4.7 10-4 m2. The surfaces are...

Homework Statement A boy of mass mboy stands at the edge of a merry-go-round of radius R = 3.4 m and mass mmgr, and both are initially at rest. The boy then walks along the edge of the merry-go-round. After walking a distance of 25 m relative to the merry-go-round, the boy finds that the...

Homework Statement A rod of mass 4.5 kg and length 1.2 m hangs from a hinge as shown in the figure below. The end of the rod is then given a "kick" so that it is moving at a speed of 5 m/s. How high will the rod swing? Express your answer in terms of the angle the rod makes with the vertical...

Homework Statement A CD (radius 6.0 cm) is spinning freely with an angular velocity of 420 rpm when a bug drops onto the CD a distance 4.4 cm from the center. If the CD slows to 280 rpm, what is the ratio of the bug's mass to the mass of the CD? (Ignore the effect of the hole in the center of...

he's holding it at the end and the pole is at a 60 degree angle. Sorry for not explaining it, I don't have a picture.

Homework Statement A person carries a long pole of mass 9 kg and length 4.4 m. Find the magnitude of the torque on the pole due to gravity. Homework Equationssin(60) and cos(60), Torque=Force_gravity*r*sin(theta) The Attempt at a Solution

I'm totally confused. Can you make the variables for acceleration a little clearer. And wouldn't the normal be applied to the y and not the x components when finding the sum of forces?

Homework Statement A block of mass 3.1 kg is initially at rest on a wedge of mass 19 kg, height 0.20 m, and an incline angle of 30° as shown in the figure below. There is no friction between the wedge and the floor. Starting at the top of the incline, the block is released and slides toward...

Homework Statement Two objects are moving along the x-axis with velocities of 37 m/s (object 1) and -19 m/s (object 2). (b) What is the ratio of their masses Homework Equations The Attempt at a SolutionNo idea

Homework Statement How do you find the kinetic energy lossed when you have equal masses in a collision problem? Homework Equations The Attempt at a Solution

I have one more problem it asks for the direction of the impulse imparted to the bat. I have the magnitude but don't know how would I find the direction.

Thanks I got the answer. I knew how to get the magnitude but got stuck with how to set it up after finding the components.

Impulse is dp=mv_f-mv_i. I have the final velocity* cos theta+ final velocity *sin theta+ initial velocity. Is this right?

The y component is final velocity* sin theta. I have the x component for both final a initial velocities and the y component for the final velocity. The y component for the initial will be just the -35m/s. How do I add them together to get the magnitude?