1. A block is at rest on a wooden ramp. The coefficient of static friction between the block and ramp is 0.35. What
is the angle between the ramp and the horizontal direction when the box first begins to slide?
2. A cart movi
1. A centrifuge rotor is starting to spin up, experiencing a constant angular acceleration.
of the following must be true?
A. the rotor is being acted upon by a force
B. the rotor is being acted upon by a torque
C. both a and b are true
D. neither a
Change in pitch (f) when source and/or observer of sound are moving
v = velocity of sound with respect to medium
vs = velocity of source (wrt medium)
vo = velocity of observer (wrt medium)
vo & vs positive in direction of sound propagation
fs = frequency
TALLER DE DINAMICA DE CUERPO RGIDO
Un poste delgado uniforme de 15.0 &' y 1.75 ) de longitud se mantiene vertical mediante un cable y tiene unidos una
masa de 5.0 &' (como se indica en la figura 1) y un pivote en su extremo inferior. La cuerda unida a