Item 11 The pulley in (Figure 1) has radius 0.160 m and moment of inertia 0.380 kg - m². The rope does not slip on the pulley rim. Figure 4.00 kg 5.00 m 2.00 kg 1 of 1 Part A Use energy methods to calculate the speed of the 4.00 kg block just before it strikes the floor. Express your answer with the appropriate units. V= μA Value Submit Request Answer < Return to Assignment Units www Provide Feedback ? 11 of 11 Review | Constants
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- Part D: What is the ratio of the kinetic energy to the potential energy when it is at 0.143m from equilibrium? Part E: Draw a graph with kinetic energy, potential energy, and total mechanical energy as functions of time.Required information An arrangement of two pulleys, as shown in the figure, is used to lift a 74.3-kg crate a distance of 3.24 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. F P kg where P = 74.3. What is the change in the potential energy of the crate when it is lifted a distance of 3.24 m? |kJ4. Two identical masses are suspended by strings wrapped around identical frictionless pulleys, except that a heavy metal ring has been added to one of the pulleys. The masses are released from rest and allowed to fall to the ground. How does the final kinetic energy of the falling mass compare between the two systems? Clearly explain your line of reasoning using physics concepts and equations. m m
- 95 kgkg firefighter needs to climb the stairs of a 25-mm-tall building while carrying a 35 kgkg backpack filled with gears. Part A How much power does he need to reach the top in 55 ss?In 1.38 minutes, a ski lift raises four skiers at constant speed to a height of 137 m. The average mass of each skier is 68.5 kg. What is the average power provided by the tension in the cable pulling the lift? Number i Save for Later Units Attempts: 0 of 3 used Submit AnswerCircular Motion A 1 Kg bead is confined to move on a vertical circle of radius 2 meters. There is no friction between the bead and the circular track. The bead has a speed of 10 m/s when at the top of the circle at point "A", and the total mechanical energy of the bead is assumed to be constant as it moves around the circle. Assume it takes the bead 0.62 seconds to go counter-clockwise from point "A" to point "B" each cycle. 10 m/s 2 m 30° Note: vector directions should be given as the "standard" angle with 0≤0 < 360 degrees Calculate the average speed (m/s) from "A" to "B" (based on the 0.62 seconds mentioned in the description).
- show workA system of two paint buckets connected by a lightweight rope is released from rest with the 12.0 kg bucket 2.0 m above the floor as shown in figure below. Use the principle of conservation of energy to find the speed with which this bucket strikes the floor. You can ignore friction and the mass of the pulley. ed 10.00 120kg 20m 40kg a. 2.43 ms-! b. 9.8 ms- 5.0ms-! d. none of the aboveA 500 kg cart rests atop a hill 30.0 m high on a roller coaster. Its gravitational potential energy is measured relative to the bottom of the hill. The cart then rolls down the hill. Which of these best describes what is happening in this situation? a. the total mechanical energy of the cart is decreasing, the kinetic energy of the cart is increasing, and the gravitational potential energy of the cart is increasing b. the total mechanical energy of the cart is increasing, the kinetic energy of the cart is increasing, and the gravitational potential energy of the cart is increasing c. the total mechanical energy of the cart is increasing, the kinetic energy of the cart is increasing, and the gravitational potential energy of the cart is decreasing d. the total mechanical energy of the cart is increasing, the kinetic energy of the cart is decreasing, and the gravitational potential energy of the cart is increasing e. the total mechanical energy of…
- A small box with a mass of 8.00 kg is being swung around on the end of a string which has a length, L =1.40 m . The tension in the string is 12.0 N. The box has a tangential velocity of 2.60 m/s and is moving on a level, horizontal surface which has a co-efficient of kinetic friction of 0.253. The co-efficient of static friction is unknown. side view top "bird's eye" view L VTPlease help!Can i get help with this question