It takes a force of 35 N to stretch a 45-cm spring to 90 cm and hold it there. How much work was exerted to stretch the spring as described? (Ans: 7.88 J)

Q: Find the work done in moving object of mass 40 kg through distance of 6.66 m by applying force of 5…

A: Given data:  Displacement (d) = 6.66 m Force (F) = 5 N Required: Work done (W)

Q: It takes a force of 35 N to stretch a 45-cm spring to 90 cm and hold it there. How much work was…

A: Given The force to stretch the spring is F=35 N. The initial length of spring is xi=45 cm. The…

Q: A force of 30N is required to maintain a spring stretched from its natural length of 12cm to a…

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Q: What is the minimum work required to push a car with a mass of 1,500 kg car a distance 200 m upwards…

A: Given data: Mass of the car (m) = 1,500 kg Incline distance (d) = 200 m Incline angle θ= 20°…

Q: If a person moves a trolley for a distance of 10 m with a force of 50 N, then the work done is: A)…

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Q: Suppose that 3 J of work is needed to stretch a spring from its natural length of 24 cm to a length…

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Q: What is the minimum work needed to push a 950 kg car 710 m up along a 19.0° incline? Ignore…

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Q: How much work is done against gravity in lifting a 9 kg object through a vertical distance of 55 cm?…

A: Expression for force applied to lift the object -  F=mg Where m=Mass=9 kg  g=Acceleration due to…

Q: A force of 40 N is required to maintain a spring stretched from its natural length of 12 cm to a…

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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: How much work is required to throw a ball with a mass of 0.27 kg 30.4 m/s? Assume the ball starts…

A: Work done = change in K.E Work done = (K.E)f -(K.E)i                   = 1/2mvf2-1/2mvi2…

Q: Calculate the work done by a 47 N force pushing a 0.025 kg pencil 0.25 m against a force of 23 N.

A: Given Data : The force applied to move the pencil is given as F = 47 N. The mass of the pencil is…

Q: Suppose a person pushes a box over a distance of 4.38 m with a constant force  of 330.2 N.  How much…

A: The solution is given below

Q: If a force of 5 Ib produces a stretch of one-tenth the natural length L ft of a spring, how much…

A: The force on a spring is given by F = kx, where k = spring constant of the spring x = deformation of…

Q: How much work is required to throw a ball with a mass of 0.46 kg 33.1 m/s? Assume the ball starts at…

A: Given Mass of ball = 0.46 kg Initial velocity of ball = 0 m/s Final velocity of ball = 33.1 m/s We…

Q: You do 6.5 J of work to stretch a spring with k = 210 N/m, starting with the spring unstretched.

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Q: Ahmed carrying a weight of 50 N walks a distance of 2m as shown in figure. The work done by him is…

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Q: Find the work available for a car weighing 1290N, that travels 200. meters

A: 1)weight of car = 1290 N distance travelled = 200 m

Q: A force of 4 pounds is required to hold a spring stretched 0.3feet beyond its natural length. How…

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Q: How much work is done by an applied force to lift a 15 N block 3.0 m vertically?

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Q: A truck hitched to a trailer exerts a horizontal net force of 906 Newtons. If the trailer moves a…

A: Given data:          Net force ( F ) = 906N          Distance ( d ) = 1237 m Formula :          Work…

Q: A coolie carries a load of 500 N to a distance of 100 m. The work done by him is* 50 kJ 5J OJ 0.25J

A: Given data: Load = 500 N Distance (d) = 100 m Required: Work done (W)

Q: A boy pushes a spring with maximum force of 75 N, compressing it 2.0 cm. How much work does the boy…

A: Given data: Applied force (F) = 75 N Compression or displacement (d) = 2.0 cm…

Q: Why is it tiring to push hard against a solid wall even if no work is done? A 75 kg firefighter…

A: Q 1) We get tired because we use our energy to contract the muscles. We try to push the wall using…

Q: If a person pushes on a lawnmower with a constant force of 90.0 N at an angle of 40° to the…

A: Given data: Constant force (F) = 90.0 N Angle (θ) = 40° to the horizontal Horizontal displacement…

Q: How much work is done by a table as it holds up a 3.8 kg cat? Your answer: O OJ 3.8 J 37 J The…

A: The work done to hold up a cat on the table is the potential energy due to the gravitational force.…

Q: A worker pushes horizontally on a large crate with a force of 195 N, and the crate is moved 4.0 m.…

A: Given data: The applied force is F=195 N. The distance moved is s=4 m.

Q: A force of 49 N raises a 5 kg object 0.61 m upwards. How much work was done by the force?

A: Applied force (F) = 49 N Mass (m) = 5 kg Distance moved (d) = 0.61 m (upwards)

Q: A worker pushes horizontally on a large crate with a force of 245 N, and the crate is moved 4.5 m.…

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Q: A force of 57.1 N is applied to a box at an angle of 34.0° below the horizontal.  Find the work that…

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Q: Suppose that 48 J of work is needed to stretch a spring from its natural length of 9 m to a length…

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Q: If it takes 10.0 J of work to move an object 2.0 meters, what is the weight of the object?

A: The work done to move an object to a distance d is given as,…

Q: In the figure shown, if the mass (m-6 Kg) is moving with constant speed and traveled a distance…

A:

Q: Suppose that 48 J of work is needed to stretch a spring from its natural length of 9 m to a length…

A:

Q: that

A: Given, Mass(M)=13 kg. Displacement=65 cm=65/100 m=0.65 m. g=9.8 m/s²

Q: A man pushes a lawn mower on a level lawn with a force of 201 N. If 38% of the force is directed…

A: Given,

Q: If 12 J of work is needed to stretch a spring from 11 cm to 15 cm and another 20 J is needed to…

A: Given data: The work done for the first case is, W1= 12 J The spring stretched from an initial…

Q: How much force is exerted by the Soccer player in pushing the ball to the goal, having the work done…

A: Given data The work done by the soccer player is given as W = 75 J. The distance covered by the ball…

Q: Find the work done in joules by gravity as an object of the mass m=9 kg is raised up at constant…

A:

Q: How much work is required to throw a ball with a mass of 0.23 kg 30.0 m/s? Assume the ball starts…

A:

Q: A man pushes a lawn mower on a level lawn with a force of 187 N. If 43% of this force is directed…

A: Work done  W = Force * displacement Force must be in direction of displacement.

Q: A spring has a spring constant k = 500.0 N/m. If the resting length of the spring is 10.0 cm, how…

A: A spring when forced to expand from its equilibrium position leads to a change in potential energy.…

Q: How much work does it take to lift a 30.0 N bag 10.0 m high in 5.00 s?

A:

Q: Suppose that 2 J of work is needed to stretch a spring from its natural length of 32 cm to a length…

A: The original length of the spring,

Q: How much net work is required to accelerate a 1000-kg car from 20 m/s to 30 m/s? x 105 joules

A: Given data: Mass (m) = 1000 kg Initial velocity (v0) = 20 m/s Final velocity (v) = 30 m/s Required:…