When you are looking at a mechanics problem, what tells yon that you should use the Work- Energy theorem to solve it?
Q: Below is a side-view picture, where a box is brought up to a height at point A and moves a distance…
A: The gravity’s work done on the box can be given by the work-energy theorem as, Here, U represents…
Q: Work is a scalar quantity. Explain.
A: A scalar quantity is the one which has magnitude but not direction. The work is done when a force…
Q: The sign of many physical quantities depends on the choice of , Ay coordinates. For example, a, for…
A: As we know there are two type of quantities scalar and vector . Acceleration is vector quantity and…
Q: You throw a book with a mass of 2 kg straight up from the ground at an initial velocity of 9 m/s. a)…
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Q: A mysterious constant force of 34 N acts horizontally on everything. The direction of the force is…
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Q: A mysterious constant force of 43 N acts horizontally on everything. The direction of the force is…
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Q: Answer the following and explain it in simple words 1. Why is more work done in climbing a hill…
A: Work done is change in energy or force times displacement. 1. While walking on level road , there is…
Q: Evaluate the work done by the force, F = 3xi +4yj, moving along the path y=x² from (0,0) to (3,9).
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Q: Hi, why can't you solve for vb using the work energy theorum? Since it is initailly at rest and you…
A: Of course we can use work energy theorem here by taking displacement from top to bottom by…
Q: A0.20 kg ball was thrown vertically upward from a 20-m high building with a speed of 10 m/s. On its…
A: The ball’s mass is, The height of the building is, The ball’s initial speed is, The height above…
Q: Several physical situations are described below. For each situation, simplify the work-energy…
A: A ball moves as per given figure,
Q: On a frictionless canvas a 5.5 kg block can slide along the x-axis and is subjected to a force of 80…
A: mass m = 5.5kg force is F = 80 N distance travelled d = 10 m the initial velocity of block is u = 0…
Q: A 10N horizontal force is exerted on a 100kg object that slides on a frictionless, horizontal…
A: First method: According to the Newton’s second law, the acceleration of the object is, F=maa=Fm=10…
Q: As shown in the image above, a ball slid down a hill and fell into an opening in the ground,…
A: The following problem involves the law of conservation of mass. The law states that if there is no…
Q: ACD case slides along a floor in the positive direction of an x axis while an applied force a acts…
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Q: (a) Check all of the following that are correct statements, where E stands for ymc². Read each…
A: The energy is E = γmc2 That is m = rest mass The relativistic mass : m' =γm Choose the correct…
Q: A bullet with a mass of 14.5 g is accelerated along the length of a 73.5 cm long rifle barrel from…
A: The given mass of the bullet is m =14.5 = 0.0.145 kg Velocity of the bullet at the time of bullet…
Q: That is the work-energy theorem and what basic principle of physics does it represent
A: Work energy theorem sates that Work done by all the external forces is equal to change in kinetic…
Q: 3: A dragster accelerates from rest down a street of length d = 400.0 m. In the absence of any…
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Q: Consider the constant force: F = {-50, -30, 40}N. What is the work done by this force on a…
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Q: Discuss the work- energy theorem.
A: Motion is relative as it differs in different scenario. Attributes like velocity, displacement, etc…
Q: es that we have studied about how to compute the work done on a system due to an ex-ternal force.…
A: Work is a form of energy but it always comes into picture when energy is being transferred from one…
Q: I just need a refresher. Taking a physics class. Would you mind working out step by step an…
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Q: A mysterious force acts on all particles along a particular line and always points towards a…
A: We must ascertain the particle's potential energy while it is being subjected to the specified…
Q: QUESTION How does the answer for the work done by the applied force change if the load is doubled? O…
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Q: Suppose a 74 kg sprinter, starting from rest, runs the first 9 m in 3 s at constant acceleration, a…
A: Given Mass of a sprinter = 74 kg sprinter starting from rest, Distance traveled in first 3 sec = 9 m…
Q: A sled of mass 70 kg starts from rest and slides down a 10° incline 80 m long. It then travels for…
A: Given that-Mass of the sled, m= 70 kgLength of the plane, L= 80 mAngle of inclination of the plane…
Q: Work= force times distance: W=Fd Part A: Calculate the work done in ligting a 460-N barbell 1.8m…
A: a)The work done is,
Q: A cable pulls an 290 kg safe up a slope inclined at 20°, for 11 m on an very slippery oily surface.…
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Q: You apply a constant force of (49 N) (52 N) to a loaded supermarket pushcart as it undergoes a…
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Q: A mysterious force acts on all particles along a particular line and always points towards a…
A: Given, The force is F=br3 The distance at which the potential energy is to be calculated is D when…
Q: Find the work (in J) done by the force F (6 N/m)yî + (27 N/m)xĵ between the points A = (0, 0) and B…
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Q: elp me answer this question thank you! - WHAT IS THE WORK-ENERGY THEOREM? SHOW ONE EXAMPLE AND…
A: WORK ENERGY THEOREM It state that " Work done by all the force (conservative , non-conservative ,…
Q: - A skateboarder is at the top of a frictionless ramp defined by the function y = r². The top of the…
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Q: A box of mass 'm' is pushed into a spring with spring constant 'k'. The spring is displaced a total…
A: Given, spring constant, = k displacement = ∆x, ( so its amplitude is ∆x) mass of box, = m initially,…
Q: magnitude
A: Work done(W) is defined as the dot product of Force(F) and displacement(s) Here, θ is the angle…
Q: You are given a cart with mass m and initial velocity v at the top of a ramp that is h meters high.…
A: Given, m= 250 kg v= 10m/s h= 100m
Q: block is pushed along a horizonal surface by a constant force of magnitude 46 N that is acting 30⁰…
A: Work done = force ×displacement
Q: On an essentially frictionless, horizontal ice rink, a skater moving at v = 3.0 m/s encounters a…
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Q: A child of mass m = 16 kg slides down a slide of height h = 2.7 m without friction. Let…
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