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Assuming that the hinge at A is removed and that the hinge at B can exert couples about the y and x axes. Problem 4.124: A small door having a mass of 7 kg is attached by hinges A and B to a wall and is held in the horizontal position shown by rope EFH. The rope passes around a small, frictionless pulley at F and is tied to a fixed cleat at H. Assuming that the hinge at A does not exert any axial thrust, determine
(a) The tension in the rope,
(b) The reactions at A and B.
A vehicle starts from rest and accelerates to 4.0 m/s2 for 5 seconds, then maintain that velocity for 10 second, Determine what is the final speed of the vehicle
A high diver of mass 65.0 kg steps off a board 10.0 m above the water and falls vertical to the water, starting from rest. what average upward force did the water exert on her
A ship is floating on a lake. Its hold is the interior space beneath its deck; the hold is empty and is open to the atmosphere. What volume of water per second leaks into the ship
A rocket is launched straight up with constantacceleration. Four seconds after liftoff, a bolt falls offthe side of the rocket. What was the rocket's acceleration
What are sunspots and how are they related to the Sun's magnetic field? Is the magnetic field stronger weaker in sunspots? How does the temperature in a sunspot relate to the temperature in the rest of the photosphere.
A singly charged positive ion has a mass of 2.42 x 10-26 kg. After being accelerated through a potential difference of 240 V, Calculate the radius of the path of the ion in the field
A 1.80 m length of wire is held in an east-west direction and moves horizontally to the north with a speed of 15.3 m/s. The vertical component of Earth's magnetic field in this region is 40.0 µT directed downward. Calculate the induced emf between th..
a block of ice of mass 4.50 is placed against a horizontal spring that has force constant 150and is compressed a
On a warm summer day (29?C), it takes 4.50s for an echo to return from a cliff across a lake. What is the temperature on the winter day
A 15-g ball is shot from a spring gun whose spring has a force constant of 600N/m. The spring can be compressed 5 cm. How high can the ball be shot if the gun is aimed vertically
25-kg ball begins rolling from rest with constant angular acceleration down a hill. how long will it take to make the next complete revolution
A tennis player receives a shot with the ball (0.0600 kg) traveling horizontally at60.0m/s and returns the shot with the ball traveling horizontally at34.0m/s in the opposite direction. What work does the racquet do on the ball
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