1. Considere el muelle de la Figura 2 con k Æ 20,4N/m. Colgamos una masa de 500g del muelle y esperamos hasta que esta queda en reposo.
a) Teniendo en cuenta la ley de Hooke, ¿Cuál es el desplazamiento x
dado en el extremo del muelle?
b) ¿Cuál es el trabajo realizado al estirar el muelle?
c) Si añadimos otra masa de500g, el muelle se estirará otros0,240m,
hasta xB Æ 0,480m.. Calcular el trabajo adicional.
2. Un muelle que cumple la ley de Hookey con constante k Æ 135N/m se
comprime9,50cm a partir de la posición de equilibrio. ¿Cuál es el trabajo
requerido para realizar esta compresión?
3. Un muelle que cumple la ley de Hooke tiene una constante k Æ 500N/m.
¿Cuál es el trabajo realizado para estirar el muelle desde x Æ 0,30m a x Æ
0,40m?
4. Si13,4J de trabajo permiten comprimir un muelle 2,37cm,¿cuál será la
constante del muelle?

1. the materials manager for a billiard ball maker must periodically place orders for resin, one of the raw materials used in producing billiard balls. she knows that manufacturing uses resin at a rate of 50 kilograms each day, and that it costs $.04 per day to carry a kilogram of resin in inventory. she also knows that the order costs for resin are $100 per order, and that the lead time for delivery is four (4) days.2. at what point should resin be reordered? a. 0 kilograms remainingb. 50 kilograms remainingc. 200 kilograms remainingd. 400 kilograms remaininge. 500 kilograms remaining3. if order size was 1,000 kilograms of resin, what would be the length of an order cycle? a. 0.05 daysb. 4 daysc. 16 daysd. 20 dayse. 50 days4. if the order size was 1,000 kilograms of resin, what would be the average inventory level? a. 50 kilogramsb. 200 kilogramsc. 500 kilogramsd. 800 kilogramse. 1,000 kilograms5. if the order size was 1,000 kilograms of resin, what would be the daily total inventory costs, excluding the cost of the resin? a. $5b. $10c. $20d. $25e. $40

Amass weighing 24 pounds, attached to the end of a spring, stretches it 4 inches. initially, the mass is released from rest from a point 8 inches below the equilibrium position. find the equation of motion. (use g = 32 ft/s2 for the acceleration due to gravity.)

This chart shows characteristics of three different types of waves. which statement is best supported by the information in the chart? wave x and wave y are mechanical waves, and wave z is an electromagnetic wave. wave x and wave y are electromagnetic waves, and wave z is a mechanical wave. wave x and wave z are electromagnetic waves, and wave y is a mechanical wave. wave x and wave z are mechanical waves, and wave y is an electromagnetic wave.