Is the kinetic energy of cart A greater than, less than, or equal to the kinetic energy of cart B after they have passed the second mark?
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Q: A 5.58 kg object falls freely (ignore air resistance), after being dropped from rest. Determine the…
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- Consider four "special positions" of the marble: (A) - the marble begins to fall (B) the cord begins to stretch (C) - the equilibrium position (D) the marble comes to a momentary stop as shown below. Assume that the zero level of the gravitational potential energy of the system "marble-Earth" is at the level of the table. 31 The marble reaches its maximum speed: at position B A Obetween positions A and B . Б at position C X C D Obetween positions B and C Oat position D Obetween positions C and DA single frictionless roller-coaster car of mass m = 750 kg tops the first hill with speed v= 15 m/s at height h = 40 m as shown. Find the speed of the car at B and C. Fint hill-Voice Overview: In this lab we will use your video for the free fall to verify the conservation of energy/ Work-Energy theorem. We will verify that weight as a conservative force, offers the opportunity of conversion of potential gravitational energy into kinetic energy. For this purpose, we will be calculating g and comparing it to the accepted value. We will also consider the accepted value of the acceleration due to gravity to be: g= (978.03 + 0.01)cm/s2 Conservation of Energy: As your object falls, its position as well as its speed changes. The video analyzer "Tracker" will give the position and the speed of your object. Since your object started from rest: Wmg = mgh = AKE = my2 v² =2gh 1. What should we plot to get a linear graph? What are your predictions for the slope? ex 2. Plot your data using Excel (attach a copy of your graph, make sure to label the axis and add a title to the graph). Add a labeled table of data to your Excel graph sheet. Conservation of Energy 30 25 20 =…
- As shown in the figure below, two masses m, = 4.30 kg and m, which has a mass 60.0% that of m., are attached to a cord of negligible mass which passes over a frictionless pulley also of negligible mass. If m, and m, start from rest, after they have each traveled a distance h = 1.70 m, use energy content to determine the following. (a) speed v of the masses m/s (b) magnitude of the tension Tin the cord NIn order to double kinetic energy, the speed should be? A: increased by the factor of two B: increased by the factor of sqrt(2) C: descreased by the factor of sqrt(2) D: decreased by the factor of twoAn 11 kg object is flying at speed 4c/5. Calculate its kinetic energy, in units of kg c2.
- A 4.0-kg battery operated toy car has a speed of 7.5 m/s at point C and kinetic energy of 205 J at point D. What is the total work done on the particle as it moves from C to D?A sled and rider with a combined weight of 62.0 kg are at rest on the top of a hill 18.0 m high. (Enter your answers in J.) (a) What is their total energy at the top of the hill? J (b) Assuming there is no friction, what would the total energy be on sliding halfway down the hill? J (c) What would the total energy be at the bottom of the hill? J