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A uniform rod of mass 120 gram and length 50 centimeter rotates in a horizontal plane about a fixed, vertical, frictionless pin through its center. Two small beads, each of mass 28 gram are mounted on the rod thus that they are able to slide without friction along its length. Initially the beads are held by catches at positions 10 centimeter on each side of center; at which time the system rotates at an angular speed of 25 rad/s. Suddenly, the catches are released and the small beads slide outward along the rod.
(a) Determine the angular speed of the system at the instant the beads reach the ends of the rod.
__________ rad/s
The wall of a house consists of three layers: a wooden outer wall with an R factor of 1.0, a 3in layer of fiberglass insulation with an R factor of 11, what is the rate of heat loss throug an 8ft by 15ft section of this wall
At t1 = 5.00 s, the acceleration of a particle moving at constant speed in counterclockwise circular motion is a1=(2m/s^2)i + (9m/s^2)j At t2 = 6.00 s (less than one period later), the acceleration is a2= (9m/s^2)i - (2m/s^2)j The period is more t..
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A 65.0 kg human sprinter can accelerate from rest to 10 m/s in 2.90 s. all through the same interval, a 33 kg greyhound can accelerate from rest to 20 m/s. calculate (a) change in kinetic energy and (b) average power output for each.
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a series combination of a 9 k resistor and an unknown capacitor is connected to a 12 v battery. one second after the
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