Alarge horizontal circular platform (m=87.1 kg, r=3.09 m) rotates about a frictionless vertical axle. a student (m=96.3 kg) walks slowly from the rim of the platform toward the center. the angular velocity ï of the system is 2.50 rad/s when the student is at the rim. a) find ï (in rad/s) when the student is 1.75 m from the center. b) find the moment of inertia of platform through the center with respect to the z-axis. c) find the moment of inertia of the student about the center axis (while standing at the rim) of the platform. d) find the moment of inertia of the student about the center axis while the student is standing 1.75 m from the center of the platform.

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied. true or false

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

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