A wheel with a radius of 0.4 meters initially at rest and begins to accelerate at 4 rad/s2. What would the linear velocity vs time graph of the wheel look like? - horizontal - parabolic - linear increasing - linear decreas
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A: speed = 300 m/s Radius = 1.5 km = 1500 m Radial acceleration = V2 / R = (300)2 / 1500 = 90000/1500…
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- A 5 kg mass is spun around in a circle of radius 2m with a period of 7 s. What equation would you use to calculate the centripetal acceleration? Calculate the centripetal acceleration. Possible Formulas that can be used to answer the question: v=(2πr)/T ac=v2/r ac=(4π2r)/T2 Fc=mac Fg=mg F=(Gm1m2)/d2 g=Gm/r2 T2=(4π2/Gm)r3 v=√(Gm)/r g=9.80m/s2 G=6.67x10-11 (N∙m2)/kg2A disk spins at 4.0 revolutions/second. What is its period, in second? Your answer needs to have 2 significant figures, including the negative sign in your answer if needed. Do not include the positive sign if the answer is positive. No unit is needed in your answer, it is already given in the question statement.A centrifuge in a medical laboratory rotates at an angular speed of 3450 rev/min. When switched off, it rotates through 50.0 revolutions before coming to rest. Find the constant angular acceleration of the centrifuge. rad/s2
- Hi, today I had my engineering mechanics 1 test which I completely screwed up. I was quite confident in the uniform circular motion, but I had this problem in my exam which completely confused me. When I read "upward vertical acceleration" my head just start to spin as I couldn't understand what force could cause an upward acceleration. Could you help me with this problem? I bet it is easier than it looks, but still, I am confused about what is asking me and most importantly about the input it is giving me. I don't have my exam paper with me, but on my body diagram, I knew that on the aeroplane were exerted the Force of Contact Fn1 and the Force m1g in the y opposite direction. On the pilot was acting the Force of Contact with the seat of the aeroplane Fn2 and the m2g in the y opposite direction. Here is the problem: During an air show an aircraft comes out of a dive at the bottom of a circular arc at a horizontal speed of 97m/s. In the cockpit the aircraft pilot of mass 58kg…A flywheel has a diameter of 50 cm. What is the speed of a point on the edge of the flywheel if it experiences a centripetal acceleration of 15 m/s2? (1) With Free Body DiagramWhen a fan is turned off, its angular speed decreases from 168 rpm to 64.0 rpm in 6.08 s. A) what is the angukar acceleration of the fan? B) How fast the edges of the blades are moving (in m/s) at time 6.08 s, if they are 86.0 cm long?
- How fast (in rpm) must a centrifuge rotate if a particle 6.7 cm from the axis of rotation is to experience an acceleration of 200000 g’s? Express your answer using two significant figuresThe following two equations are associated with the particle in the uniform circular motion model. 2ar T = V (2) Combine these two equations to obtain an expression for the rotation rate of the centrifuge, . Choose the correct answer below. 4xr = a 4x?r a, 1 1 a none of the aboveA truck with 0.380 m radius tires travels at 32.5 m/s. At how many radians per second are the tires rotating? |rad/s What is this value in rpm? rpm
- tion 20 A rocket-powered car is set inside a circular track and ignited. Pressure sensors on the wall of the track measure the centripetal acceleration a. of the car as a function of time t to be ac (t) = h?t* + 2hkt? + k² where h andk are constants. If the radius of the track is d, what is the tangential acceleration a of the rocket as a function of time t? a (t) =A skier was dropped into a three ft radius curved path.When the skier dropped a distance of 1ft,Its speed is 3.2 ft/s and is increasing by 7.8ft/s².Determine the normal and tangential component of the skiers acceleration.Suppose an object moves with velocity v(t) = -/4t + 9i + 5j + (4 – 2t)k meters per second, and it has initial position r(0) = 2i – 7j +k. a) Find the position function r(t). b) At the initial time, is the object moving upwards or downwards? Why? c) Find the speed function of the object at time t. d) Find the tangential component of acceleration when t = 0. %3D O Do not answer here.