Describe a situation in which a force is exerted for a long time but does no work. Explain.

Q: instruction: - round off into 4 decimal places   John pushes a 1,000-kg car from rest to a…

A: Given value--- mass = 1000 kg. work = 4331.6 J. distance = 27.5 m. We have to find--- horizontal…

Q: Explain about Work done by a force.

A: When a force acts on an object over a distance, it is said to have done work on the object.  It is…

Q: Can you expend energy without doing any work? Given an example.

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Q: a block with mass m=20 kg pulled on horizontal surface , bulled by external force by 1000 N as shown…

A: Frictional force=μmg where μ=coefficient of friction m=mass of body Work done by force=F.X where…

Q: 1) A steel ball of mass 5.2 g is fired vertically DOWNWARD from a height hof 18 m with an initial…

A: Given   mass of steel ball = 5.2 g initial speed = vo = 14 m/s    (downward direction) height = 18…

Q: In 1990 Walter Arfeuille of Belgium lifted a 281.5-kg object through a distance of 17.1 cm using…

A: Mass of the object m = 281.5 kg distance lifted d = 17.1 cm = 0.171 m

Q: Give an example of a frictional force doing positive work

A: Frictional force: This force is act between two rough surface while movement. The frictional force…

Q: The figure below shows a fluid inside a cubical container of side 1 m. If the pressures inside and…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: If you push against an immovable object, such as a brick wall, you may tire yourself out, but you…

A: When we apply some force (F) on an object and it gets displaced (d) then work done on the object is…

Q: Provide an example of a situation that would help explain the concept of "zero work", in regards to…

A: In physics the work may be defined as the dot product of force and displacement. By dot product of…

Q: 1. Two tugboats pull a disabled tanker with each tug exerting a force of 1.80 x 10 N, one with 14…

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Q: As a ball falls under the influence of gravity, does gravity do positive work or negative work?…

A: Given data:  A ball falls under influence of gravity Required: The work done by gravity is negative…

Q: 1. Suppose a farmer binding a part of the rice terraces wants to bring two 100-kg sack of fertilizer…

A: Ans:- Image-1

Q: You are reshelving books in your dorm room. You lift a book from the ground to the top shelf. The…

A: According to the question, the kinetic energy at the ground and at the final height h(say), the…

Q: Two people of the same mass climb the same set of stairs . Person A climbs the stairs in 25s. Person…

A: Since both the persons have to climb the same set of stairs, the work done by both the persons is…

Q: How is it possible to apply a force to an object and accomplish no work? Provide an example

A: It is possible to apply a force to an object and accomplish no work there are many examples one of…

Q: In the figure shown, if the mass (m-9 Kg) is moving with constant speed and traveled a distance d=16…

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Q: A shopper in a supermarket pushes a trolley with a force of 30N directed at an angle of 25° downward…

A: Given : F = 30 N θ = 25° d = 40 m

Q: Is work done whenever a force is exerted? Explain.

A: Force F is applied to body to displace it from one position to another position, then work done on a…

Q: The force F = (3i - j) N acts on a particle, causing a displacement of Ar = (3i + 2j) m. Find the…

A: Answer  W=7 J

Q: The force F = (3î - j) N acts on a particle, causing a displacement of ∆r = (3ỉ + 2j) m. Find the…

A: Given: Force F = (3î - j) N Displacement of ∆r = (3ỉ + 2j) m To determine the work done on the…

Q: If we know that a force of 5 N is applied on an object while the object moves 2 m, can we determine…

A: Given : F = 5 N d = 2 m

Q: A 2 kg rock is thrown upward, with a speed of 5 m/s and returns to the same spot, with the same…

A: Give Mass m = 2 kg Initial velocity is U = 5 m/s in upward direction.  Final velocity is V = 5 m/s…

Q: Why does the force of gravity do work on a car that rolls down a hill but no work when the same car…

A: We know the expression for work is W= F.scosθ    The force of gravity do work on a car that rolls…

Q: To clean a floor, a janitor pushes on a mop handle with a force of 50.0N.(a) If the mop handle is at…

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Q: Identify a case where an object is moving over a surface with friction, but the frictional force…

A: When the object moves in a pure rolling motion, the work done by the friction will be zero.

Q: Cite an example wherein  force exerted on a body does no work. Explain.

A: Work done is defined as the product of force, displacement and cosine of angle between force and…

Q: instantaneous rate at which the force does worl

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Q: Two particles, each of mass 7.0 kg, are a distance 3.0 m apart. To bring a third particle, with mass…

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Q: A projectile of mass m is fired at an angle 9 giving it an initial speed of vo. The projectile…

A:

Q: Is it possible that the work done by a force is negative? Give an example.

A: Yes it is possible for work done by a force to be negative.If the displacement happened in the…

Q: A horizontal spring is stretched 10 cm and then released from rest. Will the spring ever stretch a…

A: Given that: The spring was stretched 10 cm initially and released from rest.

Q: A constant force of 40N in the positive x direction acts on a 4.0-kg object as it moves from the…

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Q: Which do you think requires more work: moving up stairs at a slow speed (ex: walking) or moving up…

A: We know the  formula of work  W= F × S Where F =Force  S= displacement