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Question1
An 8.0 meter uniform ladder of weight 355 N leans next to a smooth vertical wall at an angle 50 degrees with respect to the ground. A fire fighter of weight 875 N stands 6.3 meters from the bottom of the ladder. What is vertical and horizontal components in N of the force exerted on the ladder by the ground?
Question2
A car is located on a hydrolic platform 5.0 m by 1.5 m that hoists it up 1 meter. The area placed on the other end of the hydrolic apparatus is 2.75 m squared. What is force necessary on one end of apparatus in order to lift the car? How much work is done lifting the car?
Question3
A horizontal uniform bar of mass 3.0 kg and length 3.0 m is hung straight on two vertical strings. String 1 is attached to the end of the bar, and string 2 is attached a distance 0.7 m from the other end. A monkey of mass 1.5 kg walks from one end of the bar to the other. Find out the tension T_1 in string 1 at the moment that monkey is halfway between the ends of the bar.
A uniform rod of mass m and length l is kept vertical with the lower end clamped. What wil be the linear speed of the free end at this instant
A large plastic block has a net charge of -1.0mC. How many more electrons than protons are in the block
Consider an LC circuit with L = 13 mH and C = 2285 pF. At what frequency is the reactance of the inductor equal to the reactance of the capacitor
block 1 of mass m1 slides from rest along a frictionless ramp from height h = 3.2 m and then collides with stationary block 2, What is the value of distance d if the collision is elastic
Superconductors have been discussed as a means for electrical energy storage. Because they are resistanceless, how much electrical energy (in kWh) could be stored
A 2.65 kg object is moving in a plane, with its x and y coordinates given by x = 2t2 - 3 and y = 2t3 + 6, where x and y are in meters and t is in seconds. Find out the magnitude of the net force acting on this object at t = 2.00 s.
question1a hotel elevator ascends 160 with a utmost speed of 4.9. its acceleration and deceleration both have a
A constant horizontal force Fa pushes a 3.70 kg FedEx package across a frictionless floor on which a xy coordinate system has been drawn. it gives the package's x and y velocity components versus time t. (The vx axis is marked in increments of 1.2..
During a stage production of Peter Pan, the 53.5 kg actress playing Peter has to fly in vertically (descend). Calculate the tension in the wire supporting the actor
You have a sample of Xenon in a rectangular container. The gas exerts a total force of 2.03 N perpendicular to one of the container walls
find the speed of the block as it hits the ground.A 4-kg ball traveling to the right with a speed of 4 m/s collides with a 5-kg ball traveling to the left with a speed of 2 m/s. What is the total momentum of the two balls after they collide.
A mass-spring system oscillates with an amplitude of 5.60 cm. If the spring constant is 226 N/m and the mass is 453 g, determine the mechanical energy of the system
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