in the diagram below the red block has a mass of 3 kg, the blue block has a mass of 4 kg, & the pulley has a mass of 6 kg. Treat the pulley as a solid cylinder, assume the string remains taut the entire time, and assume no thermal energy is generated. Determine how fast the blue block will be going when it hits the ground if it was released from rest 42 cm above the ground. 1.59152 m/s X
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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.2 Your answer is partially correct. Try again. In the figure the pulley has negligible mass, and both it and the inclined plane are frictionless. Block A has a mass of 1.0 kg, block B has a mass of 2.2 kg, and angle e is 27 °. If the blocks are released from rest with the connecting cord taut, what is their total kinetic energy when block B has fallen 21 cm? Number 2.47 Units the tolerance is +/-2% Click if you would like to Show Work for this question: Open Show Work SHOW HINT LINK TO TEXT LINK TO SAMPLE OBLEM LINK TO SAMPLE PROBLEM LINK TO SAMPLE PROBLEM VIDEO MINI-LECTURE 10:37 PM search ENG 4/4/2021 17 12 1home 3. 4 9. 7. 8. R. T. 004. The power provided by a force can also be written as P = dW /dt = F · d7/dt = F .ö. A force F = (3i – 2j + 6k)N is applied to an object moving with a velocity i = (2î – 3k) m/s. a. What is the power provided by this force? Does the object speed up or slow down or neither, if this force is the only unbalanced force acting on the object? b. Consider a force that is always perpendicular to the velocity. Does the object speed up or slow down or neither, if this force is the only unbalanced force acting on the object?
- please help with questions 94,95 and 96A mother has four times the mass of her young son. Both are running with the same kinetic energy. ▼ Part A What is the ratio vs/vm other of their speeds? Us/Um = [ΠΙ ΑΣΦ ?Item 1 1 of 2 Figure 1)A roller-coaster car may be represented by a block of mass 50.0 kg. The car is released from rest at a height h = 48.0 m above the ground and slides along a frictionless track. The car encounters a loop of radius R = 16.0 m at ground level, as shown. As you will learn in the course of this problem, the initial height 48.0 m is great enough so that the car never loses contact with the track. Part A Find an expression for the kinetic energy K of the car at the top of the loop. Express the kinetic energy numerically, in joules. 1] ? K = J Figure 1 of 1 Submit Request Answer Part B Find the minimum initial height hmin at which the car can be released that still allows the car to stay in contact with the track at the top of the loop. Express your answer numerically, in meters. ΑΣφ hmin = m P Pearson
- Four identical masses of 7.3 grams are placed at the corners of a square with a side length of d = 27 cm, as shown below. What is the gravitational potential energy of the system? d dEnergy conservation with conservative forces: A very small 100-g object is attached to one end of a massless 10-cm rod that is pivoted without friction about the opposite end. The rod is held vertical, with the object at the top, and released, allowing the rod to swing. What is the speed of the object at the instant that the rod is horizontal? 1.8 m/s 1.4 m/s 0.71 m/s 2.8 m/s 4.0 m/s fbbonly typing....13
- 1m = 325 kg h1 = 19.5 m h2 = 4.7 m A roller coaster car of mass m is rolling down the track, starting from rest, as shown in the figure. The initial height from the ground is h1 (Position-1), while the final height is h2 (Position-3). The system has no friction. What is the speed of the car when it reaches its final height (Position-3).What is the Net Force Cart Mass, mc . 284 kg Angle, theta 49 degrees Distance, d . 75 m Suspended Mass, ms . 240 kg Velocity 1 .664 m/s Velocity 2 .672 m/s Velocity 3 . 670 m/s Average Velocity . 669 m/s Kinetic Energy . 064 J