Friction
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Unanswered Posts
physics
a soccer ball with mass 0.420 kg is initially moving with speed 2.00 m/s. a soccer player kicks the ball, exerting a constant force of magnitude 40.0 N in the same direction as the ball's motion. over what distance must the player's foot be in contact with the ball to increase the ball's speed to 6.00 m/s?
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Need this badly today
what superelevation is required on a 40 railway curve for zero resultant flange pressure on a car running at a speed of 64kph?
C. What is the resultant flange pressure on a 450KN car moving around this curve at a speed of 96KPH.
Gage G of the track is 1.50m. (A 40 curve is one whose chord is 30.5m)
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The Intuition Behind Integration by Parts (Proof & Example)
Many students simply memorize the Integration by Parts formula: ∫ u dv = uv - ∫ v du, but understanding where it comes from makes it much easier to remember and apply during exams.
1. The Intuitive Proof (Reverse Product Rule)
The entire concept is actually just the Product Rule for differentiation in reverse.
From the product rule for two differentiable functions, u and v: (uv)' = u'v + uv'
Reference Books for "Strength of Materials" or "Mechanics of Materials"
What reference books used by this site? I know that it's Singer, right, but what edition? Thanks. Your reply is highly appreciated.
Design a rod and beam,with given stresses.
Hello all guys ! Can somebody please explain me how to solve this problem,i got exam which is coming closer and closer with every single day.Probably the problem will be easy for you,but I am new to this science (3-th semester in uni,and this things are new to me)So here is the task,from the exam.
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Right triangle problem
Problem: Find h,x,y,z,ϴ,Φ, and β.
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Differential Equation: [ e^(2y) - y cos (xy) ] dx - y(1 - x^2) dy = 0
Please help me again to solve this.
(e2y-ycosxy)dx-y(1-x2)dy=0
Recent comments
Max. shear at A = 12.73…
is it not…