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- 2. The small cart has a speed VA= 4 m/s as it passes point A. It moves without appreciable friction and passes over the top hump of the track. Determine the cart speed as it passes point B. Is knowledge of the shape of the track necessary? Answer: VB = 7.16 m/s Solution VA = 4m/s 1.8 m A B VB# A An open belt drive connects two pulleys 1.2 m and 0.5 m diameter on parallel shafts 3.6 m apart. The belt has a mass of 1 kg/m length and the maximum tension in it is not to exceed 2 kN. The 1.2 m pulley, which is the driver, runs at 200 r.p.m. Due to the belt slip on one of the pulleys, the velocity of the driven shaft is only 450 r.p.m. If the coefficient of friction between the belt and the pulley is 0.3, find: a. Torque on each of the two shafts, b. Power transmitted, Power lost in friction? d) Efficiency of the drive?Answer the question correctly. Show the complete solution in a paper.
- The figure below shows a roller-coaster car on a track. The car is fully loaded with passengers and has a total mass of 485 kg. At point A, the car is at the lowest point in a circular arc of radius r1 = 12.0 m. At point B, the car is at the highest point of a circular arc of radius r2 = 16.8 m. What is the maximum speed (in m/s) the car can have at point B in order for the car to maintain contact with the track at all times (that is, so that it does not "jump" off the track)?Pluto moves in a fairly elliptical orbit around the sun. Pluto's speed at its closest approach of 4.43 × 10⁹km is 6.12 km/s. Part A What is Pluto's speed at the most distant point in its orbit, where it is 7.30 x 10 km from the sun? Express your answer with the appropriate units. V = μA Value Units ?pls help not in scientific notation pls
- Q. In the figure, a 1340 g ball is connected by means of two massless strings each of length L = 1.70 m, to a vertical rotating rod. The strings are tied to the rod with separation d = 1.70 m and are taut. The tension in the upper string is 35 N. When it rotates about rod, what is the minimum speed of the ball? A. 8.660 m/s B. 4.999 m/s Rotating rod С. 3.331 m/s D. 2.002 m/s Е. 1.222 m/sS How V= 2√80-5 much time does it take to stopA particle can slide along a track with elevated ends and a flat central part, as shown in Figure. The flat part has length L. The curved portions of the track are frictionless, but for the flat part the coefficient of kinetic friction is u = 0.20. The particle is released from rest at point A, which is at height h = L/2. How far from the left edge of the flat part does the particle finally stop? %3D
- Algebraic relation. Two particles, A and B, are in uniform circular motion about a common center. The acceleration of particle A is k times that of particle B and the speed of A is 3 times that of B. Find the numerical value of the ratio of their radii, A/B if k = 6 O • B 1.4 ra/rB = TA Please record your numerical answer below, assuming three significant figures. 0 RE 4 EPIC D 9/A child on a sled starts from rest at the top of a 20.0° frictionless slope that is 100m long. What is the child's speed at the bottom of the slope? A) 26 m/s B) 90 m/s C) 11 m/s D) 47 m/s E) 34 m/sA skateboarder weighing 52.38 kg goes over a smooth circular hill. If the skateboarder's speed at point A is 28.31 m/s, what is his speed at the top of the hill (point B)? Use g=9.8 m/s2 . Derive first the working equation before you substitute the given data to avoid disparity from the correct answer. Round off answer up to two decimal places.