QUESTION

Read and understand each problem. Show your solutions as well as the conversion of units, and round off your answers to 2 decimal places.

1. An inclined plane 1360cm long has one end 75cm above the floor. A 1.8KN block is pulled along the plane with a force parallel to the plane. If the coefficient of friction is 0.25, determine the ideal mechanical advantage, actual mechanical advantage, and the efficiency of the simple machine. (6pnts)

2. 2 balls are traveling in the opposite direction, the 1st ball with a 5lb is traveling to the East with a velocity of 37m/s, and an 8lb ball traveling to the West with a velocity of 1k m/s. If the coefficient of restitution is 0.75, determine the velocity of the two balls after the collision. (6pnts)

3. A pulley system as shown in figure below has an IMA of 3.6 and is used to lift a load of 36K lb. If the effort moves 13ft, how far does the load move? If this work was done in 3mins, what horsepower was developed? If the machine was 88.97% efficient, how the load? (6pnts) much effort would be needed to lift

4. A wheel weighing 95N is pulled along a horizontal surface by a force of 17N which is applied 45° above the horizontal. If the wheel started from rest and the coefficient of friction is 0.10, determine the kinetic energy and the velocity of the wheel after it has moved a distance of 1105cm. (6pnts)

5. If the coefficient of friction between cart and the surface is 0.15 and the radius of curvature of a circular curve of the surface is 360cm. What is the maximum speed allowable if there is no banking? (6pnts)

Public Answer

PKXZQW The First Answerer