Grade 11 QUESTION 5
28 kg
A stationary 28 kg block is
connected to an EMPTY 1 kg
bucket by a light, inextensible
cord running over a frictionless
pulley. The coefficient of static
friction between the table and
the block is 0,45 and the
coefficient of kinetic friction
between the table and the block
is 0,32. Sand is gradually added
to the bucket until the system is
AT THE POINT of moving.
9 kg
5.1 State Newton's second law of motion in words.
(2)
5.2
Draw a labelled free-body diagram of all the forces acting on the 28 kg
block.
(4)
5.3 Calculate:
5.3.1 The MINIMUM force required TO MOVE the 28 kg block.
(4)
5.3.2 The MINIMUM mass of SAND needed in the bucket in order to
move the 28 kg block.
(4)
5.3.3 The acceleration of the system if 12,6 kg of sand is in the bucket.
(5)
[19]​

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