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1. A claw hammer is used to pull a nail out of a board. The nail is at a 60 degree angle of to the board, and a force F1 of magnitude 500N applied to the nail is required to pull it from the board. The hammer head contacts the board at point A, which is 0.080m from where the nail enters the board. A horizontal force F2 is applied to the hammer handle at a distance of 0.300m above the board. What magnitude of force F2 is required to apply the required 500N force (F1) to the nail? (You can ignore the weight of the hammer.)
2. In the figure what is the magnitude of the net gravitational force exerted on the 0.100-kg uniform sphere by the other two uniform spheres? The centers of all three spheres are on the same line. In the figure what is the direction of the net gravitational force exerted on the 0.100-kg uniform sphere by the other two uniform spheres?According to Newton's third law, does the 0.100-kg sphere exert forces of the same magnitude as your answer the first question, but opposite direction, on each of the other two spheres?
3. A particle of mass 3k is located 1.80m from a particle of mass k. Where should you put a third mass K so that the net gravitational force on K due to the two masses is exactly zero.
An airplane has an effective wing surface area of 14 m2 that is generating the lift force. In level flight the air speed over the top of the wings is 270 m/s, while the air speed beneath the wings is 259 m/s. What is the weight of the plane? N
A 28kg rock approaches the foot of a hill with a speed of 15 m/s. Use energy conservation to find the max height above the foot of the hill reached by the rock
A Toyota Prius driving north at 61.0 {rm mph} and VW Passat driving south at 41.0 {rm mph} are on the same road heading along each other (but in different lanes). (We take the positive direction to be north.)
A spring oscillator is designed with a mass of 0.258 kg. It operates while immersed in a damping fluid, selected so that the oscillation amplitude will decrease to 1.00% of its initial value in 8.34 s
A particle of mass 29 g and charge 89 μC moves during a uniform magnetic field, in a region where the free-fall acceleration is -9.8 j m/s 2 . The velocity of the particle is a constant 17 i km/s, which is perpendicular to the magnetic field, what, t..
(a) Calculate the ratio of the electric potential at the surface of the large sphere to that of the small sphere. (b) Calculate the ratio of the magnitudes of the electric fields at the surface of the large sphere to that of the small sphere.
Two masses m1 and m2 sit on a horizontal, frictionless table and are connected by a light string, Find the tension in each of the two strings
A car of mass 1203 kg collides head-on with a parked truck of mass 2000 kg. Spring mounted bumpers ensure that the collision is essentially elastic. what is the initial speed of the car
A 60 kg man is ice skating due north with a velocity of 6.0 m/s when he collides with a 38 kg child. What are the magnitude and direction of the child just before the collision
An AC adapter for a laptop computer unit uses a transformer to reduce the line voltage of 110 V (rms) to a voltage of 18.5 V. What is the rms current delivered to the transformer
A spherical conducting shell has 12 microcoulombs of positive charge on it. The radii of the shell are r(inner)=12 cm and r(outer)=2r(inner). A particle of -4 microcoulombs is placed at the center of the shell. Provide a sketch of the electric fie..
Two equal forces act on the two different objects, one of which has a mass ten times as large as the other. Will the more massive object have the larger acceleration, an equal accelearation, or a smaller acceleration.
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