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The simple 2 kg pendulum is released from rest in the horizontal position. As it reaches the bottom (vertical) position the cord wraps around the smooth fixed pin at A and continues in the smaller arc in the vertical plane. Calculate the magnitude of the force R supported by the pin at A when the pendulum passes the 30o position.
A guitar string, 2.50 meters long has a mass of 0.458 grams. If a tension of 276N is put on the string, what will the speed of sound in the string be? When the guitar is strung, it is 0.576 m from the bridge to the last fret ( from node to node).
The masses of astronauts are monitored during long stays in orbit, such as when visiting a space station. What is the mass of an astronaut who has an oscillation period of 2.00 s when in the chair
After a completely inelastic collision, two objects of the same mass, Find the angle between the initial velocities of the objects
A constant, uniform electric field points in the positive x-direction with the magnitude of 500 N/C. How much energy is required to move the particle
A blacksmith cools a 1.30kg chunk of iron, initially at a temperature 650.0 degrees C, How much water did the blacksmith trickle over the iron
If the create has a mass of 110 and is 1.60 tall and 0.80 in depth and width, what is the minimum force needed to make the crate start tipping? (Assume the center of mass of the crate is at its center and static friction great enough to prevent sl..
Two coils of wire are placed close together. Initially, a current of 4.70 A exists in one of the coils, but there is no current in the other. What is the mutual inductance of the two-coil system
determine the coefficient of static friction between a motorcycle tires and the pavement as he leans to the side in
A dipole (two equal and opposite charges) are placed 1 nm apart. What is the electric force on the -e charge due to the +e charge
Sue and Sean are pushing on opposite sides of a 5.0kg box which is on a frictionless surface. What is Sean's force if the box accelerates away from Sue at 2.0m/s^2
A rotating wheel requires 3.03 sots rotate through 37.0 revolutions. Its angular speed at the end of the 3.03 s interval is 98.6 rad/s. What is the constant angular acceleration of the wheel?
Batman (mass = 101 kg) jumps straight down from a bridge into a boat (mass = 590 kg) in which a criminal is fleeing. What is the velocity of the boat after Batman lands in it
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