7.5 ft- 12 ft -6ft 1217 lb/ft² 아12ft -750 lb/ft² x

Q1. Two boxes are connected by a cord running over a pulley. The coefficient of Kinetic friction between box A and the table is 0.2 50 kg a) Show the free body diagrams of box A and box B b) Find the acceleration of the system of two boxes. c) Find the tension in the cord. B. 2.0 kg Figure 01

Converting units how many required in the question shown in the picture below

1- A 60 cm square gate has its top edge 12 m below the water surface. It is on a 45 angle and its bottom edge is hinged as shown in Fig. What force P is needed to just open the gate and its Water location? Hinge 45° 4 २२२२३२२२

3. A certain substance has a mass of 1200 kg and a volume of 0.952 cu.m. Find the following (a) weight (b) mass density (c) specific weight and (d) specific gravity.

One acre equals 43,560 ft2. One gallon equals 231 in.3.Determine the number of liters of water in 2500 acre · ft ofwater.

A pail and its contents weigh 80 lb. The pail is attached to the end of a 100 ft rope thatweighs 10 lb and is hanging vertically. How much work is done winding up the rope with the pail attached?

How do you solve for the resultant forces?

Value of F = 44 lb

2.1 A university campus has 30 classrooms and 300 offices. In each classroom, there are 16 fluorescent tubes that use 110 W of electrical power per fluorescent tube. The offices have two fluorescent tubes each, 110 W per fluorescent tube. The university is open 280 days a year. The classrooms and offices are not used for 6 hours per day, but the light is on all day. Assume that the electricity price is NOK 1.5/kWh. How much does the university save each year if all the lights are tumed off for the 6 hours, not even the classrooms or the offices are used? 2.2 Water is pumped from a lake to a large storage tank which is open to the atmosphere at the top. The water surface in the storage tank is 20 m above the water surface of the lake. The volume flow is 40 litres/s and 11.5 kW of electrical power is used to pump the water from the lake to the storage tank. Disregard losses in flow energy due to friction and from changes in the kinetic energy of the water. Use y=998 kg/m3 as the mass…