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you are swinging your younger sister in a circle of radius .9m. If her mass is 24kg and you arrange it so she makes one revolution every 1.5s, (a) what is the magnitude and direction of the force that must be exerted by you on her? (b) what is the magnitude and direction of the force she exerts on you?
How is the mechanical deformation energy defined? How do you calculate the work of fracture of a brittle material?
A satellite is in Earth orbit with an altitude at perigee of 555.0 km and an altitude at apogee of 1200.0 km. a. What is the semi-major axis of the orbit? b. What is the eccentricity? c. If the true anomaly is 160 degrees, what is the satellite's ..
a mass of 2.4 kg of air at 150 kpa absolute and 12 degrees celsius is contained in gas tight frictionless piston
How may data be managed to support a function (billing, human resources, accounting, finance, sales/marketing, training)?
Knowing that in the position shown the rod has angular velocity of 4 rad/s clockwise; determine the angular velocity of the rod after it has rotated through a 90°.
a full revolution has 100 rpm flywheel rotation. the press is equipped with two hand palm buttons mounted on the machine at a distance of 20 inches from the point of operation. How many engagement points on the flywheel would be necessary to make ..
The elevator E has a mass of 500kg, and the counterweight at A has a mass of 150Kg. if the motor supplies a constant force of 5KN on the cable at B, determine the speed of elevator when t= 3s, starting from rest neglect the mass of pulleys and cab..
what is the specific heat of air in US customary units given that its value in SI units is approximately 1 kN.m/kg.K?
A jack-screw has a handle 35 inches long and a pitch of 7/32 inches. If a pull of 15 lbs. is required at the end of the handle to lift a 3,000 lbs.
Refrigerant R-134a is compressed steadily and adiabatically in a reversible compressor. The volume flow rate entering the compressor is 800 ft3/min.
air flows in a channel whose velocity at 3 neighbouring points ab and c which are 10 cm apart are shown in the
Demonstrate suitable accuracy by using a simple hand calculation for the static analysis of the structure. Describe in detail the hand calculations performed to validate the final solution. What is the approximate error between the simplified hand..
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