Lesson 1: WORKWhat's MoreLet's Work it OutDirection: Using the Physics concepts, determine if Work is donein the following cases. Justify your answer.FBD(include the displacement)Is there WorkDone?JustificationScenario(Yes/No)1. You go up a flight ofstairs2. You tug a stubborncarabao whichrefuses to budge3. A ripe mango fallsfrom the tree4. You pushed againstan immovableconcrete wall for 5minutes5. You push yourclassmate on aswing

Name: Lesson 1: WORKWhat's MoreLet's Work it OutDirection: Using the Physic
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Description: Lesson 1: WORKWhat's MoreLet's Work it OutDirection: Using the Physics concepts, determine if Work is donein the following cases. Justify your answer.FBD(include the displacement)Is there WorkDone?JustificationScenario(Yes/No)1. You go up a flight o

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What's More Let's Work it Out Direction: Using the Physics concepts, determine if Work is done in the following cases. Justify your answer. Is there Work Done? FBD (include the displacement) (Yes/No) Scenario Justification 1. You go up a flight of stairs 2. You tug a stubborn carabao which refuses to budge 3. A ripe mango falls from the tree 4. You pushed against an immovable concrete wall for 5 minutes 5. You push your classmate on a swing

What's More Let's Work it Out Direction: Using the Physics concepts, determine if Work is done in the following cases. Justify your answer. Is there Work Done? FBD (include the displacement) (Yes/No) Scenario Justification 1. You go up a flight of stairs 2. You tug a stubborn carabao which refuses to budge 3. A ripe mango falls from the tree 4. You pushed against an immovable concrete wall for 5 minutes 5. You push your classmate on a swing

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A block of mass 2.28 kg starts sliding from rest down an incline plane for 25 cm. If the block has a velocity of 1.14 m/s, and the incline has an angle measured from the +x axis of 37 degrees then: a. How much work did kinetic friction do on the block? b. What is the coefficient of kinetic friction between the block and the incline?
A 10 kg block is being pulled along the ground (µk=0.3) by a guy pulling the rope at a 30° angle (from the ground) with force = 100 N. The block initially started from rest. a. Identify all forces on the block as its moving. b. Are the forces in the same direction or opposite direction of the motion? Are the forces doing positive or negative work on the block? c. Is the force of gravity or the normal force doing work? Why or why not? d. How fast is the block going after it is pulled 3.0 m? Use the work-kinetic energy theorem. e. Use the conservation of total energy to determine the amount of thermal energy added.
a. Calculate the work done (in J) on a 1550 kg elevator car by its cable to lift it 39.5 m at constant speed, assuming friction averages 135 N. b. What is the work done (in J) on the lift by the gravitational force in this process? c. What is the total work done (in J) on the lift?
A van travels on a rough level road with an initial speed vo. The road has a coefficient of kinetic friction Hk. At the instant when the brakes lock, the tires slide than roll. 1. List down the forces that do work on the car. 2. Use the work-kinetic energy theorem to determine the minimum stopping distance of the car in terms of its initial velocity vo, the acceleration due to gravity g and the coefficient uk. 3. Using one of the kinematic equations, determine the time it takes for the car to stop in terms of the initial velocity vo. 4. Use your previous result to determine the power it takes for the car to stop completely.
▾ Part A A system of two objects has AKtot 7 J and AUnt=-3 J. = Vocals Search B N How much work is done by interaction forces? Express your answer in joules. Wint ΜΕ ΑΣΦ Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining Part B How much work is done by external forces? Express your answer in joules. Wat ΜΕ ΑΣΦ Submit Request Answer Provide Feedback msi ENTER SHIFT ? J J NO.
The two ropes shown in the bird's-eye view of the figure are used to drag a crate 5.8 m across the floor. How much work is done by the force fk→?Express your answer with the appropriate units. How much work is done by the force T1→?Express your answer with the appropriate units. How much work is done by the force T2→?Express your answer with the appropriate units.
Several physical situations are described below. For each situation, simplify the work-energy equation by canceling any zero terms and any energy terms (whether KE or PE) which are unchanging. Explain each term which gets canceled. A cross-country skier is in motion on top of a small hill. He skis down the hill into the valley and up a second smaller hill. He uses his poles to propel himself during the entire motion. Ignore the effect of friction and air resistance. Simplification of Work-Energy Equation KEi + PEi + Wnc = KEf + PEf
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.
Coulomb’s law tells us that the electrostatic force between two charged objects can be calculated by: ?= ??1?2/?^2Where k is a constant with a value of 8.99x109 Nm2/C2; ?1 and ?2 are the charges of the two particles (1.602x10-19 C), and r is the distance between the two particles. The force is attractive if the charges of the two particles is opposite (one’s positive and one’s negative) and repulsive if the charges have the same charge (both positive or both negative). Calculate the electrostatic force on proton #1 from the other two protons.Will the gravitational force between the protons be attractive or repulsive? What about the electrostatic force? Which has the larger magnitude, the electrostatic force or the gravitational force? Can the electrostatic and gravitational forces alone create a stable Lithium nucleus?
1. Calculate the work done on the suitcase by F→. Express your answer with the appropriate units. 2. Calculate the work done on the suitcase by the gravitational force. Express your answer with the appropriate units. 3.Calculate the work done on the suitcase by the normal force. Express your answer with the appropriate units. 4. Calculate the work done on the suitcase by the friction force. Express your answer with the appropriate units. 5. Calculate the total work done on the suitcase. Express your answer with the appropriate units. 6. If the speed of the suitcase is zero at the bottom of the ramp, what is its speed after it has traveled 3.90 mm along the ramp? Express your answer with the appropriate units.
A system of two objects has AKtot = 7 J and AUint = -4 J. Part A How much work is done by interaction forces? Express your answer in joules. IVE ΑΣΦ Wint = Submit Part B How much work is done by external forces? Express your answer in joules. V—| ΑΣΦ Wext= = Request Answer Submit Request Answer ? ? J J
1. A box of mass m,, initially at rest, is acted on by a single position and time-dependent force y F(x) = Fo sin(b?t) £ + Fo e Viŷ with b, Fo, y, constants. a. Determine the units of the constant b, F., and y1. b. Assuming your system is the book, find the work done by this force on the book as it moves from 7 = õ to i; = xf& + Y1ŷ.