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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 VBThe 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 plsA 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? %3DAlgebraic 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/
- 1. A 100 kg cart goes around the inside of a vertical loop of a roller coaster. The radius of the loop is 3 m and the cart moves at a speed of 6 m/s at the top. What is the force exerted by the track on the cart at the top of the loop?46. a. You're driving over the top of a hill with a radius of 15.075 m. How fast would you need to drive over it to just bounce off your seat as you go over the top? Previous submissions: b. How fast would you need to drive over the top for the normal force of the seat pushing up on you to be half your weight? Previous submissions:
- A smooth block is set at the top of a smooth track. There is no friction between the block and track. We would like the block to make its way through the entire track, and so it must stay on the track as it goes through the circular loop section. The block starts at rest, and the Radius of curvature for the loop is 10 meters. Use g = 9.8 m/s?. What is the minimum starting height H for the block if it is to make it through the loop while still staying on the track? Hint: At the top of the loop the Normal force will be zero in this situation. This is because we want a starting height that will give us just enough speed at the top of the loop to follow the circular path, no more, no less. H=? RI need to find how far from the end of the ramp does the skateboard touch down?g12 physics