Recent content by wesDOT

Homework Statement A block of wood floats on water. The density of the wood is .634g/cm^3. Its mass is 243 g. Find the minimum mass (g) of lead we must attach to the block so that it will sink, along with the lead. The density of lead is 11.3 g/cm^3. Caution: you must take into account...

never mind, my calculator was in degree mode, not radian.

Homework Statement A body oscillates with simple harmonic motion along the x-axis. Its displacement varies with time according to the equation x = 5 sin(πt + π/3) meters. The acceleration in m/s2 of the body at t = 1 second is approximately Homework Equations The harmonic motion ones I...

you have to know the friction of the road as well as the initial velocity in order to find out, then you would use the work-kinetic energy theorem.

That makes sense. I knew there was something i was missing. Thanks alot.

I am trying to draw an FBD for a beam leaning against a frictionless wall attached to a pin at the bottom end. The forces present would be the weight, normal force of the pin attached to the floor and the normal force of the wall. When determining forces that are present, can I remove the...

That is the image he should have posted

bump.

The origin is the end of the bat so its acting 60 centimeters away from the origin. Just clarifying.

Are you familiar with unit vectors?

the one with the man standing on the beam. the only difference is that now you have the forces from the two masses as opposed to just one from the man.

james, sum the forces and sum the torques. Break the forces into X and y components before you set up your equations Then figure out which forces actually have torque and set up a ∑tau equation for that. At that point just solve for T. There is an example in your textbook of a problem...

Isnt there a force being exerted by the wall/pin? If the wall wasnt there, the beam would fall down and to the left? Is the wall's force not in the equation because the components of that force act at a 90 degree angle to the origin and therefore have no torque? Wouldnt the component for the...

Static equilibrium! Homework Statement A 25-ft crane supported at its lower end by a pin is elevated by a horizontal cable as shown in the figure. A 250-pound load is suspended from the outer end of the crane. The center of gravity of the crane is 10 feet from the pin, and the crane weighs...

The quantity of motion which is found by multiplying mass by velocity. To me its somewhat hard to define as its more of a concept with practical uses.