QUESTION 10 10. The force required to hold a spring 0.5 m past its natural length is 8 N. Find the work (in J) done stretching the spring from its natural length to 2 m past its natural length. (A) 4 (B) 8 N. F ral (C) 16 (D) 32 (E) 64 O (A) O (B) O (C) O (D) O (E)

Q: ohn, of mass 82.4 kg can do work for about 2.0 minutes at the rate of 1.0 hp. How long will it take…

A: Given data: Mass (m) = 82.4 kg Power (P) = 1.0 hp Height (h) = 12.0 m 1 hp = 746 watts Required:…

Q: In the figure shown, if the mass (m=5 Kg) is moving with constant speed and traveled a distance d=10…

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Q: If it takes 4.00 J of work to stretch a Hooke's-law spring 5.0 cm from its unstressed length,…

A: The work done is given by  W = 12Kx2 where,  K is the spring constant and x is the stretch length.

Q: When released from a height ofh3= 14.00 m, a 344.00 g block slides down the path shown below,…

A: given , height , h = 14.00 m mass of the block , m = 344 .00 g =0.344 Kg final speed , v = 11.00 m/s…

Q: Why do you do no work on a 25-Kg bagpack when you walk a horizontal distance of 100mm?

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Q: A particle of mass 6 kg is constrained to move along the trajectory y(x) = -8 x2 + 49 (m).  If the…

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Q: A box with mass m = 39_kg slides down a Ar = 15 m ramp with incline o = 29°. Find the work done by…

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Q: A shopper pushes a grocery cart 19.2 m  on level ground, against a 16.3 N frictional force. The cart…

A: W=work done by pushing force=friction work done +increase in KE

Q: A block is acted on by a force that varies as (2.0×104N/m)x for 0≤x≤0.21m, and then remains constant…

A: Given data :- Force F = 2.0×104 N/m ; 0< x ≤ 0.21 m x = 0  to x = 0.30 m (for this range we wish…

Q: A gardener pushes a lawn roller through a distance of 20 m. If he applies a force of 196 N in a…

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Q: If A 29-kg child starts from rest and slides down a slide that is 2.6 m high. At the bottom of the…

A: Given parameters :  Mass "m"= 29kg  Height "h"= 2.6m  Final Velocity "v"= 2.5m/s .   Concept :…

Q: A particle of mass 6 kg is constrained to move along the trajectory y(x) = -5 x2 + 10 (m).  If the…

A: Given trajectory:     y(x)=-5x2+10 (m)∴dy=-10x      _______(1) Force: F=7 N  (constant) Displacement…

Q: A force F= 9xi - 2yj, where Fis in Newtons and x and y are in meters. Find the work done if the…

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Q: A block of mass 0.31 kg is released from rest at point A and slides down a curved slope to point B.…

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Q: Suppose you drag a box 8.0 m across a horizontal floor, exerting a force of 90. N at 35 degrees…

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Q: O (S): A 50-N force is the only force on a 2-kg object that starts from rest. When the force has…

A: Given: Force = 50 N Mass of the object =2 kg Distance =2 m v0=0 General equation of motion: v2= v02…

Q: Suppose the total work done on a 1620-kg car as it coasts 25.0 m down a hill with f = 6.00° is…

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Q: A weight lifter lifts a 380 N set of weights from ground level to a position over his head, a…

A: Given data: The amount of weight lifted is L=380 N. The height of weight lift is h=2.10 m.   The…

Q: An 0.5 kg object is initially located at a height 2.5 m was kicked vertically upward to a height of…

A: The work done is given by  W = F s cos A  where, F is the force, s is the displacement and A is the…

Q: "A 4.00-kg box of fruit slides 8.0 m down a ramp, inclined at 30.0e from the horizontal. If the box…

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Q: ,2 54. A 5.0-kg box has an acceleration of 2.0 m/s when it is pulled by a horizontal force across a…

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Q: If it requires 9.0 JJ of work to stretch a particular spring by 2.0 cmcm from its equilibrium…

A: Write the expression for the work done by the spring.

Q: What work is done by a force F = (8.00 x N)î + (5.00N), v 7; =-(5.00 m)î – (3.00 m)j? with x in…

A: Given : Force, F→=(8.00xN)i^+(5.00N)j^ Initial position of particle, ri→ = (5.00m)i^+(3.00m)j^ Final…

Q: A porter pulls a 23 kg luggage along a level road for 3.5 meters by exerting a force of 18 N at an…

A: Solution: (a) Calculate the work done in pulling the luggage. W=Fdcosθ Here, W is the work done, d…

Q: A man pushes a 270-N block 9.1 m along a level floor at a constant speed with a force-directed 45•…

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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: Two objects are each displaced the same distance, one by a force F pushing in the direction of…

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Q: A 70 kg hiker climbed a mountain 1000 m high. Assuming the work was done at a steady rate during 3…

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Q: A one-dimensional force has the form F(x) = A x2-Bx where A =1.8 N/m2 and B = 0.65 N/m. How much…

A: We have a one-dimensional force which is given by  F(x)=Ax2-Bx  where constants A=1.8 N/m2 and…

Q: While training for breeding season, a 460 gram male squirrel does 29 pushups in a minute, displacing…

A: Given:- While training for breeding season, a 460 gram male squirrel does 29 pushups in a minute…

Q: Uncompressed, the spring for an automobile suspension is 45.0 cm long. It needs to be fitted into a…

A: Potential energy of a spring is defined as the energy stored in it when the spring is displaced from…

Q: If a person lifts up a heavy box weighing 500 N a distance of 20 cm off the ground, but then gets…

A: We have a box which has a weight of F=500 N that is lifted up to a height h=20 cm=0.2 m off the…

Q: A batter hits a baseball with mass 0.145 kg straight upward with an initial speed of 25 m/s. How…

A: When a force F acted on a body, produces a displacement d, then work done W by the force is…

Q: The force F(x,y) = [(2.56 N/m)y]i + [(3.14 N/m)x]j acts on a particle.  What is the work done, in…

A: Given that, the expression of force which is acts on the particle. And also given that if particle…

Q: 11 3.0 m A 200 kg piano 3.0 m up a frictionless 200 incline at a constant speed? How much work is…

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Q: A 1.5 kg hockey puck initially moving at 4.9 m/s slides 12 m along the ice before coming to rest.…

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Q: While training for breeding season, a 380 gram male squirrel does 32 pushups in a minute, displacing…

A: Given: m = 380 g = 0.38 kg  number of push ups, n = 32  height, h = 8.5 cm = 0.085  m

Q: A crane lifts a 650 kg beam vertically upward 10.1 m and then swings it westward 18 m. How much work…

A: Here the workdone is only in upward direction. No workdone in horizontal direction.

Q: How much work is done by a force F = (10x)i + (5y)j – (2z)k, with x in meters, that acts on a…

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Q: In the absence of friction, how much work would a child do while pulling a 12kg wagon a distance of…

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Q: Find the work done in joules by gravity as an object of the mass m 5 kg is raised up at constant…

A: Mass of object m = 5 kg Initial height h1 = 26 m Final height h2 = 69 m g = 10 m/s²

Q: Two objects are each displaced the same distance, one by a force F pushing in the direction of…

A: Given  distance=d first force=F1=F second force=F2=4F3 at angle 450