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Q. Two stiff parallel wires a distance d apart in a horizontal plane act as rails to support a light metal rod of mass m (perpendicular to each rail). A magnetic field directed vertically upward, acts throughout. Suppose the rod has mass and length 22 cm and the current through it is If the coefficient of static friction is determine the minimum magnetic field (not necessarily vertical) that will just cause the rod to slide. Give the magnitude of and its direction relative to the vertical (out of the page towards us). [Hint: you are changing the angle of the magnetic field with respect to the vertical]
Find out the coefficient of static friction
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Find out the tension in the strap; given that the suitcase moves with constant speed and that the coefficient of kinetic friction between the suitcase and the floor is 0.40.
A professor's office door is 0.80 wide, 3.0 high, and 5.0 thick; has the mass of 25; and pivots on frictionless hinges. A "door closer" is attached to the door and the top of door frame.
Determine magnitude of the force
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Determine the magnitude of the friction force. 5.80 g lead bullet traveling at 460 m/s is stopped by a large tree. If half the kinetic energy of the bullet is transformed into internal energy and remains with the bullet while the other half is tra..
An electric field of 254,000 N/C points due west at the certain spot. What are the magnitude and direction of the force that acts on the charge of -8.1 µC at this spot.
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