The second floor of a house is 4.0 m above street level. What is the work required to lift a 300 kg refrigerator to the second floor?

Q: A 20kg box is lifted 350m above the ground in 5 minutes. What is the average power exerted on box?…

A: Given: Mass = 20 kg Distance = 350 Meters Time = 5 minutes = 300 seconds 1.) Work Done = Force x…

Q: While rearranging a dorm room, a student does 436 j of work in moving a desk 1.6 m. What was the…

A: Amount of work done by the student, W = 436J displacement of the object, d = 1.6m Horizontal force…

Q: What is the efficiency of an out-of-condition professor who does 2.00 ✕ 105 J of useful work while…

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Q: A worker on a scaffolding 75 ft above the ground needs to lift a 500 lb bucket of cement from the…

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Q: If 12 J of work are needed to stretch a spring from 16 cm to 20 cm and 20 J are needed to stretch it…

A: Given data The work done required to stretch the spring from 16 cm to 20 cm is given as W1 = 12 J.…

Q: Calculate the work done by a student in lifting a 0.3 kg book from the ground and keeping it on a…

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Q: A dockworker pushes a box along a horizontal floor and moves a distance of 4.6 m with a force F…

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Q: A person lifts a 25 kg box of old sports equipment at an angle of 75 degrees to the vertical to a…

A: Mass of box (m) = 25 kg Angle to the vertical (θ) = 75 degree Height above the ground (h)= 2.6 m

Q: If work W is required to stretch an ideal spring a distance x from its unstretched length, what work…

A: spring

Q: A man lifts a pail of water of mass m= 3 kg upward at a constant speed of 2 m/s for 5 s. What is the…

A: Given that: Mass of the pail of water, m=3 kg Speed , v=2 m/s time taken, t= 5s

Q: A force of 12 lb is required to hold a spring stretched 2 in. beyond its natural length. How much…

A: Scenario - Work is done to stretch a spring beyond its original length. Given, Force→F=12 lb Initial…

Q: How much work is it to lift a 25  kg sack of cement vertically 4.3 m?

A: Given data:  Mass (m) = 25 kg Height (h) = 4.3 m Required: Work done (W)

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

A: When a person is carrying a backpack, the weight of the backpack is in the vertical direction. But…

Q: A spring has a natural length of 15 cm. If a 22-N force is required to keep it stretched to a length…

A:

Q: A box of canned goods, contents have a total mass of 4.5 kg, is pushed 2 m along the floor by a…

A: The free body diagram of the box is given below.

Q: A boy of mass m climbs up the stairs of vertical height h. What would have been work done if he uses…

A: The only force acting on the boy is gravitational force or his own weight "mg". So, when a body…

Q: Stretching a non-linear spring requires an amount of work given by the equation U=15x^2-10x^3, where…

A: Given: Potential energy at a given position x: U=15x2 - 10x3

Q: How much work is done lifting a 100 N barbell vertically 0.5 m?

A: The workdone in lifting a 100 N barbell vertically 0.5 m. given,Force(F)=100 Nheight(h) moved=0.5 m

Q: how much potential energy does a person of mass 52kg have if they are standing at the top of a…

A: Given Data: The mass of a person is, m=52 kg The height of a building is, h=58 m   The expression…

Q: A bodybuilder lifts a 150 kg barbell to a height of 3.0 m.  What is the work done by the bodybuilder…

A: The potential energy is given by  U = m g h  where, m is the mass,  g is the gravity and h is the…

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

A:

Q: A horse pulls a cart with a force of 2 kN at an angle of 27 degrees with the horizontal and moves…

A: Given: The force is 2 kN. The angle is 27 degrees. The speed is 10 kph. The time direction is 12…

Q: A man lifts a 12 kg bucket of water at constant speed, from the bottom of a hole that is 17m deep.…

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Q: A horse pulls a cart with a force of 0.2 kN at an angle of 27 degrees with the horizontal and moves…

A: F = 0.2 kN = 0.2 x 103 N θ = 270 v = 10 kph = 10kmh×1000m1km×1h60min×1min60s = 2.778 m/s t = 12 min…

Q: How much work is done when a hoist lifts a 260-kg rock to a height of 7 m? (Use 9.8 m/s2 for the…

A:

Q: The force, F, required to compress a spring by a distance x meters is given by F=4x newtons. Find…

A: The force, F, required to compress a spring by a distance x meters is, F=4x newtons. First case:…

Q: The second floor of a house is 6 m above the street level. How much work is required to lift a…

A:

Q: How much work is done by gravity in causing a 45-kg rock to tumble 54 m down a slope at an angle of…

A: mass of the rock, m = 45 kg distance that rock travels, d = 54 m angle of slope with vertical,= 48…

Q: How much work does a supermarket checkout attendant do on a can of soup he pushes 0.720 m…

A: The work done is given by  W = force in the direction of displacement  x displacement  1 calorie =…

Q: A firefighter climbs a 10 m long ladder that is inclined at 40° to the horizontal.  If she has a…

A: Given Data: The length of the ladder is: L=10 m The angle of the ladder with the horizontal plane…

Q: You lift a 3kg pumpkin to a height of 0.80 m to check it out. How much work do you do on the pumpkin…

A: Mass of pumpkin m=3 kg The height to which the pumpkin is lifted h=0.80 m The acceleration due to…

Q: How much work is done lifting a 200 N barbell vertically 0.5 m?

A: The weight of the barbell, Fg = 200 N The distance for which the barbell is lifted vertically, d =…

Q: How much work is required to raise a 0.75 kg flag from shoulder height (1.2m) To the top of the flag…

A: Given: mass (m)=0.75 kg Shoulder height(h1) =1.2m  flag pole (h2)= 4 m find work is required to…

Q: Calculate the work done by a force of 30 N in lifting a load of 2kg to a height of 10m (g 10ms2)

A: Work done is calculated as:   Work = Force x Displacement W = F.d…

Q: A truck has a gross weight of 1.0 x 106 N. Assuming that the concrete road has a coefficient of…

A:

Q: How much work does a 52-kg woman do against gravity when climbing from the bottom to the top of a…

A: Given: Mass of the woman, m =  52-kg. Height of the staircase, h = 2.8 m.   To Find: The work done.

Q: Calculate the work done by a student in lifting a 0.5 kg book from the ground and keeping it on a…

A: Given: The mass of the object is 0.5 kg. The height of the object from the ground is 1.5 m.

Q: Catching a wave, a 77-kg surfer starts with a speed of 1.3 m>s,drops through a height of 1.65 m,…

A:

Q: The second floor of the house is 6m above the street level. How much work is required to lift a…

A: given:Displacement of refrigerator, h = 6 mMass of the refrigerator, m = 300 kg

Q: A worker pushes a wheelbarrow 5.0 m along a level surface, exerting a constant horizontal force of…

A: Given that Distance moved by the wheelbarrow d = 5.0 m ( let it is moved along right direction)…

Q: A 118 lb student climbs stairs with a vertical height of 5.2 m in 5.5 s how much power in watts does…

A:

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: How much work is done when a hoist lifts a 290-kg rock to a height of 5 m? (Use 9.8 m/s2 for the…

A:

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: A spring with a spring constant of 2.0 N/m is compressed by 50 cm. How much work was done on the…

A: Given

Q: A  6.6kg box of fruit slides  7.1m down a ramp, inclined  37degrees from the horizontal. Find the…

A: Mass of the box M=6.6 kg Displacement of the box d=7.1 m The component of gravitational force in…