Examine the following graph. How much potential energy (in joules) will correspond to a turning point? Lesson 8 graph PE.docx Page 1 of 1 > Potential Energy (J) 120 100 wm D 80 60 40 20 0 0 A 4 8 10 Position (m) Hide File 12 14 F 16 18 Consider the following graph. At point D, you have 25J of kinetic energy. G 20 74 A L
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- A 10 kg package is delivered to your house. Use one complete sentence to describe an example of how work is done on the package as it gets brought inside. Make sure to use proper spelling, grammar, and other language mechanics. In your explanation, make sure to use the terms related to the formula for work (W = Fd).What is the minimum amount of work needed to lift a 3 kg box 2 meters? a. 60 J b. 5 J c. 15 J d. 120 J e. 180 JThe two ropes seen in the figure are used to lower a 255 kg piano exactly 6 m from a second-story window to the ground. How much work is done by w (with an arrow to the right)?Express your answer in joules. How much work is done by T1 (with an arrow to the right)?Express your answer in joules.
- 45. A 20 kg crate slides down a 10 m high 30 degree incline with a frictional coefficient of .100. What is the speed of the crate at the bottom of the incline?A. 4.5 m/sB. 12.7 m/sC. 6.35 m/sD. 10 m/sA set of stadium stairs consist of 90, 20 cm high steps. A 70 kg runner is training bytraversing up and down the steps.a. What is the change of potential energy that occurs with each step? For all 90 steps?b. How much work is required to travel up the steps in 20 sec? In 15 sec?c. What is the power required to run up the steps in 20 sec? In 15 sec?d. What is the total work done over the course of the stadium training session? Why?Q1. a. Distinguish between homogeneous and non-homogeneous equation. b.Find the work done in moving an object along a straight line from (3, 2, -1) to (2, -1, 4) in a forcefield given by F = 4i – 3j + 2k .
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- A 700 kgkg elevator accelerates upward at 1.4 m/s2m/s2 for 14 mm, starting from rest. A. How much work does gravity do on the elevator? Express your answer with the appropriate units. B. How much work does the tension in the elevator cable do on the elevator? Express your answer with the appropriate units. C.What is the elevator's kinetic energy after traveling 14 mm? Express your answer with the appropriate units.A 1.5 kg ball is thrown upward with a velocity of 6 m/s. a). What is the kinetic energy of the ball as it is thrown upward? b). What is the gravitational potential energy of the ball when it reaches its highest point? c). To what height above the thrower’s hand will the ball rise? (for c only, round answer to nearest hundredth).Q14. A 2 kg mass is projected down a rough circular track (R = 2m) as shown. The speed of the mass at point A is 4 m/s, and at point B, it is 6 m/s. How much work is done on the mass between A and B by the force of friction?