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If for the same disk of Problem, the trial weight of 2 oz is placed at 135° cw from the reference mark, the new unbalance is found to be 4.3 mm at 11 e CW. Show that the correct balance weight is unchanged.
Problem
A thin disk is supported on spring-mounted bearings with vibration pickup and strobotac, as shown in Figure. Running at 600 rpm ccw, the original disk indicates a maximum amplitude of 2.80 mm at 45° cw from a reference mark on the disk. Next a
trial weight of 2.0 oz is added at the rim in a position 91.5° cw from the reference mark and run at the same speed. If now the new unbalance is 6.0 mm at 80° cw from the reference mark, determine the position and weight necessary to balance the original disk.
You walk 1140 m east and then 860 m south in a total time of 16 min. Compute your average velocity for east and south
A barber's chair with a person in it weighs 2100N. The output plunger of a hydraulic system begins to lift the chair when the barber's foot applies a force of 55N to the input piston. Neglect any height difference between the plunger and the piston. ..
Suppose the crystal in the above example is rotated to 30 ? with respect to the incident beam and the detector is rotated to 30 ? with respect to the crystal.
Two steel wires of the same length, one with radius r and the other with radius 2r, are connected together, end to end, and tied to a wall. How far does the point where the two wires meet move
Three forces act on a body which moves with constant velocity. One force is 9 N acting at an angle of 70°, What is the angle of the third force
Suppose a 64.0 kg boy and a 48 kg girl use a massless rope in a tug-of-war on an icy, resistance-free surface. If the acceleration of the girl toward the boy is 3.00 m/s2, find out the magnitude of the acceleration of the boy toward the girl.
The radius of the Earths very nearly circular orbit around the sun is 1.5x10^11 m, find the magnitude of the earth velocity as it travels around the sun
It is possible for a muon to be captured by a proton to form a muonic atom. A muon is identical to an electron except for its mass. Suppose some particle of mass 105.7 MeV/c2 is similarly captured to form an atom.
Although the cross-sectional area of a capillary is much smaller than that of the aorta, there are many capillaries, so their total cross-sectional area is much larger. calculate the total cross-sectional area of the capillaries
An electromagnetic wave is propagating towards the west. At a certain moment the direction of the magnetic field vector associated with this wave points vertically up. The direction of the electric field vector of this wave options:
a garden hose with an internal diameter of 2.0 cm is connected to a stationary lawn sprinkler that consists merely of
A satellite moves in a circular orbit around Earth at a speed of 4439 m/s. Determine the period of the satellites orbit
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