A 320-g mass and a 400-g mass are attached to the two ends of a string that goes over a pulley with a radius of 8.70 cm. Because of friction, the pulley does not begin to rotate
What is the magnitude of the frictional torque on the bearing of the pulley if the system is in static equilibrium? A) 0.00683 Nm
B) 0.614 Nm
C) 0.0787 Nm
D) 0.0626 Nm
E) 0.000696 Nm
A
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a. 4.0 c. 0.50 b. 0.25 d. 2.0
A 3.00-m long tube with circular crosssection tapers from a diameter of 10.0 cm at one end down to 4.00 cm at the other end
If an incompressible fluid flows irrotationally through the tube at a speed of 2.00 m/s at the 10.0 cm end, what is the speed of the flow at the 4.00 cm diameter end? A) 2.00 m/s B) 0.800 m/s C) 12.5 m/s D) 1.60 m/s E) 6.25 m/s
Two charged bodies separated by a distance d exert a repulsive electrical force on each other. The signs of the charges on the two bodies are + and –
Indicate whether the statement is true or false
A 615 N student standing on a scale in an elevator notices that the scale reads 645 N. From this information, the student knows that the elevator must be moving
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