1) Four children are trying to move a giant rock that is lying on the ground....
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
1) Four children are trying to move a giant rock that is lying on the ground. The mass of the rock is m and the magnitude of the acceleration due to gravity is g. Each child attaches a rope to the rock and pulls on that rope with the same force magnitude (F) either horizontally, vertically, or at a 45.0° angle. For each case below, determine the magnitude of the force on the rock by the ground (a contact force) in terms of F, m, and/or g, given that the rock remains at rest. Note: The force on the rock by the ground is not the same as the gravitational force on the rock by the earth (a non-contact force). For the physical representation (part 2a), draw and label a free-body diagram for the rock in each case. As part of the reflection (part 4a), explain why the forces on the rock by the ground are not the same in each case. Case A Case B Case C Child 2 Child 2 Child 2 Child 3 Child 1 Child 1 Child 4 Child 1 Child 4 Child 4 Child 3 Child 3 2) The solution to this problem does not use the required solution format. To solve this problem, simply draw the free -body diagrams for the following situations. In the free-body diagrams, include a vector indicating the direction of the net force (unless it is zero) and another vector indicating the direction of the object's acceleration (unless it is zero). Include the force vectors (magnitude and direction) but do not include separate arrows for their components. A) You are riding a bicycle down a hill while applying the brakes and skidding to a stop. Assume that air resistance is negligible, but friction is not. B) You jump off a bridge with a bungee cord attached to your ankle, and the cord stretches. Assume air resistance is negligible. C) A rocket is accelerating straight up through the Earth's atmosphere. Assume that air resistance is not negligible. D) A meteoroid moves downward through the Earth's atmosphere. Its speed is decreasing. Assume that air resistance is not negligible. 1) Four children are trying to move a giant rock that is lying on the ground. The mass of the rock is m and the magnitude of the acceleration due to gravity is g. Each child attaches a rope to the rock and pulls on that rope with the same force magnitude (F) either horizontally, vertically, or at a 45.0° angle. For each case below, determine the magnitude of the force on the rock by the ground (a contact force) in terms of F, m, and/or g, given that the rock remains at rest. Note: The force on the rock by the ground is not the same as the gravitational force on the rock by the earth (a non-contact force). For the physical representation (part 2a), draw and label a free-body diagram for the rock in each case. As part of the reflection (part 4a), explain why the forces on the rock by the ground are not the same in each case. Case A Case B Case C Child 2 Child 2 Child 2 Child 3 Child 1 Child 1 Child 4 Child 1 Child 4 Child 4 Child 3 Child 3 2) The solution to this problem does not use the required solution format. To solve this problem, simply draw the free -body diagrams for the following situations. In the free-body diagrams, include a vector indicating the direction of the net force (unless it is zero) and another vector indicating the direction of the object's acceleration (unless it is zero). Include the force vectors (magnitude and direction) but do not include separate arrows for their components. A) You are riding a bicycle down a hill while applying the brakes and skidding to a stop. Assume that air resistance is negligible, but friction is not. B) You jump off a bridge with a bungee cord attached to your ankle, and the cord stretches. Assume air resistance is negligible. C) A rocket is accelerating straight up through the Earth's atmosphere. Assume that air resistance is not negligible. D) A meteoroid moves downward through the Earth's atmosphere. Its speed is decreasing. Assume that air resistance is not negligible.
Expert Answer:
Answer rating: 100% (QA)
F6 F FyF Core A Net honizartal fonce F Cos45F F 1 2 3D Sz FH bowa... View the full answer
Related Book For
Posted Date:
Students also viewed these accounting questions
-
(a) Two workers are trying to move a heavy crate. One pushes on the crate with a force A(vector), which has a magnitude of 445 new tons and is directed due west. The other pushes with a force...
-
A chain lying on the ground is 10 m long and its mass is 80 kg. How much work is required to raise one end of the chain to a height of 6 m?
-
(a) Two workers are trying to move a heavy crate. One pushes on the crate with a force A, which has a magnitude of 445 new tons and is directed due west. The other pushes with a force B, which has a...
-
Sketch the graph of the function. y = e -x/2
-
For each of the states in Problem 12.107 find the dew point temperature. Problem 12.107 Use the psychrometric chart to find the missing property of: , , Twet, Tdry a. = 50%, = 0.012 b. Twet =15C, ...
-
The Pinnacle Company is a U.S.based manufacturer of furniture and appliances that offshored all of its actual manufacturing operations to Asia about a decade ago. It then set up distribution centers...
-
Tennessee law imposes durational-residency requirements on persons and companies wishing to operate retail liquor stores, requiring applicants for an initial license to have resided in the state for...
-
Creative Productions manufactured and sold 800 products at $10,000 each during the past year. At the beginning of the year, production had been set at 1,000 products, and direct materials standards...
-
You are to PAY 350,000 on March 16. Todays spot rate is $1.15/. The forward rate is $1.18/. On March 16 the spot rate is $1.14/. Futures contracts are for 125,000 each. Q1. How many contracts do you...
-
1. What forms of interpersonal power does Larry Ellison use and how does he use them? 2. How do the two faces of power relate to Larry Ellisons actions? 3. Does Larry Ellison use power ethically?...
-
After her apartment door was kicked-in by a burglar while she was in bed late at night, even barely audible late-night sounds make Kendra leap out of bed in fear, BEST illustrating the...
-
a) Write the output when the following code segments in program 1.1 (Figure 6), program 1.2 (Figure 7) and program 3 (Figure 8) are executed: //program 1.1. int a-1, b=2, c=3; printf("%d", (! (a>b)...
-
Adam Smith fue un escocs libre pensador propulsor de la llamada Teora Clsica, que expone en su principal publicacin "La riqueza de las naciones" su teora sobre: Seleccione una: a. Las Ventajas...
-
Write a summary of your understanding of the danielson framework and how you will prepare yourself for working with the framework.
-
For the circuit shown with following parameters, L-400 uH, R-2 92, Vin is within the range of 8 V to 16 V, Vout is desired to be 80 V constant Ts-200 us Primary winding self inductance: winding...
-
Medication Error and Sentinel EventInstructions Read the article: Human Factors and Medication Errors: A Case Study Download Human Factors and Medication Errors: A Case Study...
-
Identify errors in the following program segment and rewrite the correct statements. #include int main() ( integer x, total, y; x = y; print ("Enter the value for x:"); scanf("%d", total); total...
-
Uniform electric field in Figure a uniform electric field is directed out of the page within a circular region of radius R = 3.00 cm. The magnitude of the electric field is given by E = (4.50 x 10-3...
-
A politician holds a press conference that is televised live. The sound picked up by the microphone of a TV news network is broadcast via electromagnetic waves and heard by a television viewer. This...
-
A camera uses a lens with a focal length of 0.0500 m and can take clear pictures of objects no closer to the lens than 0.500 m. For closer objects the camera records only blurred images. However, the...
-
The maximum wavelength that an electromagnetic wave can have and still eject electrons from a metal surface is 485 nm. What is the work function W0 of this metal? Express your answer in electron...
-
For the finite square well potential, prove the formula for the transmission coefficient (7.83), calculate \(R\), and prove that \(|R|^{2}+T=1\). Equation 7.83:- T = |S|2 K3 = 42 2(+)2 cos KL + (2 +...
-
Consider an asymmetric potential barrier, with Calculate the tunneling probability \(T\) for energy \(U_{1} U_{0}\). 0, x < 0 U(x) = U> U, 0 < x 0, x > L. (7.96)
-
The data in Table 1 represent the first exam score of 10 students enrolled in Introductory Statistics. Treat the 10 students as a population. (a) Compute the population mean. (b) Find a simple random...
Study smarter with the SolutionInn App