The 1.7-kg collar at c has an outer diameter of 85 mm and is press fitted to the light 60-mm-diameter shaft. each spoke has a mass of 1.4 kg and carries a 2.6-kg sphere with a radius of 55 mm attached to its end. the pulley at d has a mass of 4.6 kg with a centroidal radius of gyration of 105 mm. if a tension t = 27 n is applied to the end of the securely wrapped cable with the assembly initially at rest, determine the magnitude of the initial angular acceleration α of the assembly. neglect friction in the bearings at a and b and state any assumptions.

The ballistic pendulum was invented in 1742 by english mathematician benjamin robins. it consists of an initially stationary pendulum that moves after being struck by a bullet, and it is used to measure the original velocity of the bullet. the known variables are the bullet's mass m, the pendulum's mass m, and the height to which the block and bullet swing, determined by the length of the pendulum l and final angle θ. two principles of physics are necessary to solve for the bullet's original velocity. what are these principles? conservation of momentum and newton's third law conservation of energy and conservation of angular momentum grade summary deductions 0% potential 100% conservation of momentum and newton's second law. newton's second law and conservation of angular momentum. conservation of energy and newton's third law conservation of momentum and conservation of angular momentum. conservation of momentum and conservation of energy conservation of energy and newton's second law.

Which example has gravitational potential energy? a.a horse slowing down from a run b.an apple about to fall from a tree branch c.a bicycle being pedaled down a horizontal path d.beaker sitting on the floor

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.