Recent content by bcd201115

Homework Statement transverse loads are applied to the beam in the figure at A, C, and E, and a concentrated couple 3Pa is applied to the beam at E. Determine expressions for (a) the transverse shear force Vc and bending moment Mc at a section just to the left of the load at C, and (b) shear...

I have to build a t-shirt launcher as an engineering project using only mechanics, no pneumatics or pressurized air. Can anyone give me any ideas on this? Right now my idea involves a pvc pipe and resistance bands inside as a slingshot. I want to use a trigger to release the slingshot but I am...

wow i was making that a lot harder than it was. it says as a function of celsius temperature so would it just be 0°C?

okay so the first one says find the angle between the invar bars ignoring expansion, so how would i start that? sorry I am just really confused

what kind of equation do i write?

Homework Statement Two metal bars are made of invar and a third is made of aluminum. At 0°C, each of the 3 bars is drilled with two holes 40cm apart. The bars are assembled into an equilateral triangle. Homework Equations a)ignoring expansion of the invar, find the angles between the...

dam* gate lol

Homework Statement A tainter gate for a lake is 21' tall and 14' wide and the water level is 17 feet from the surface to spillway. When the work is done how much water will flow through the gate if the gate is raised 2 ft, 7ft, and 10ft and how high does the gate have to be raised to maintain...

So the force at the top would be 0 right? because there's no pressure from the water? and how would i find the area at the middle and bottom?. I'm good on finding pressure but what about the area?

Homework Statement A tainter gate for a lake is 21' tall and 14' wide and the water level is 17 feet from the surface to spillway. What force is the water placing on the gate at the top, middle and bottom? Also when the work is done how much water will flow through the gate if the gate is...

Okay i have the force now, how would i find the center of gravity?

Homework Statement Comet Halley approaches the Sun to within 0.570 AU, and its orbital period is 75.6 yr. (AU is the symbol for astronomical unit, where 1 AU = 1.50 x 1011 m is the mean Earth-Sun distance.) How far from the Sun will Halley's comet travel before it starts its return journey...

Homework Statement A false mud gate made of common steel for a damn is 6'6" wide, 21'1" tall, and 1/2" thick. Assume a constant density throughout. What is the required force to lift this gate if it were laying flat on the ground and a hoist was attached to the center of gravity? also where is...

Homework Statement a .30kg ball attached to the end of a string swings in a vertical circle having a radius of 1.4m. At the instant when the string makes an angle of 30° above the horizontal, the tension in the string is 3N. What is the speed of the ball at this instant? Homework...

in the equation θf=θi+ωit+(1/2)αt2 what would i put for θf and θi?