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You are riding in an elevator that is accelerating downwards at 2 m/sec^2, when you notice that block suspended vertically from a spring scale at the elevator ceiling has a reading of 27 N. What does the spring scale read when the elevator is accelerating downwards at constant speed?
Determine the pitching moment (the moment tending to rotate the nose of the aircraft up) about the aircraft's mass center (cg) for the conditions indicated in the figure.
A 10 kg box is pulled for 3.60 m along a level surface by a ropethat makes an angle of 37 degrees above the horizontal. The tensionforce in the rope is equal to 85 N. There is a coefficient offriction between the box and the floor of 0.64.
A 1.60 kilogram block slides on a rough horizontal surface. If the coefficient of kinetic friction between the block and the surface is 0.560, find what is the force constant of the spring
A hypothetical nucleus weighs 1 lb. How many nucleons are in this nucleus and What is the radius of this nucleus
Two charged bodies exert the force of 0.185N on each other. If they are moved so that they are one-fourth as far apart, what force is exerted.
Two masses, m1 = 20 kg and m2 = 24 kg, are connected by a rope that hangs over a pulley. Find the magnitudes of the velocities of the masses after each of the masses travels a distance d = 1.5 meter
A 3.00 kg block is released from rest at the elevated end A of a frictionless track that slopes down to a point B and continues horizontally to a point D, Find the work done on the block by the normal force exerted by the track
A cube of wood and a cube of concrete, each 0.17 m on a side, are placed side by side. What is the total rate of heat transfer through the cubes
a machinist is using a wrench to loosen a nut. the wrench is 25.0 cm long and the exerts a 17.0 n force at the end of
A 1000Hz sound travels through pure oxygen. The wavelength of the sound is measured to be 0.65m. What is the speed of oxygen?
A catapult launches a rocket at an angle of 50.8° above the horizontal with an initial speed of 89 m/s. Find the maximum altitude reached by the rocket
A speed ramp at an airport is basically a large conveyor belt on which you can stand and be moved along. What is the speed at which the belt of the ramp is moving
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