How much work is done moving a 2.4 kg book to a shelf 4.0 m high?
Q: A spring is stretched vertically by a suspended object having a mass of 0.55 kg. How much work is…
A: mass, m = 0.55 kg stretch, y = 3cm
Q: you push a 90 kg box across a 12 m room. it takes you 30 seconds at a steady speed. your push force…
A: The work done by the man to push the box is as follows: W=F→·d→W=Fdcosθ θ=0°W=Fd…
Q: takes 8 seconds for a 30- kg girl to climb a 9 m high flight of stairs. How much horsepower is she…
A:
Q: A 50ft chain with mass density 5lb/ft is initially coiled on the ground. How much work is performed…
A:
Q: How much work is done to expand a 10-cm diameter cylindrical chamber at 1 atm from a length of 10 cm…
A: Hence, the work done is 79.58 J
Q: A 1800-kg elevator moves upward with constant speed through a vertical distance of 28 m.…
A: GivenMass of elevator ,m=1800 kgvertical distance travelled ,d=28 m
Q: It takes 551 N of force to balance the friction force and make a car move at a constant speed. How…
A:
Q: A 2kg crate sitting on a horizontal surface is pushed by a horizontally applied force of 8N. If it…
A: Given- Mass of crate m=2 kg Applied force on the crate F= 8N To find the work done in the first 6…
Q: A man driving a car sees a deer crossing the road and brakes the car with a force of 100 N. The car…
A: Work Done ( W ) = Force (F) * Distance moved (D)
Q: An object is pulled along the ground by exerting a force of 45 pounds a rope that makes a 15° angle…
A:
Q: Your friend wants to solve the world’s energy problems by inventing a device that will deliver ten…
A: The world or the universe works on some conservation laws. The energy conservation says that energy…
Q: A heavy rope, 50 ft long, weighs 0.5 lb/ft and hangs over a building 120 ft high. How much work is…
A:
Q: Two students are moving 80 N of books from the floor up onto a 1.5 m platform. Student 1 moves 12…
A:
Q: A car of 1100 kg mass changes the speed from 5 m/s to 6 m/s. What is the work done (in J) by the car…
A: Given, Mass of car m = 1100 Kg Initial speed of car u = 5 m/s Final speed of car v = 6 m/s
Q: A 100KG desk is pushed across a floor at a constant speed of 1 m/s. How much work must the employee…
A: Given data The mass of the desk is given as m =100 kg. The initial speed of the desk is given as u…
Q: A 5 kg block initially traveling at 4 m/s to the right slides 5 m before it comes to rest. How much…
A:
Q: A 75 kg person, originally at rest, sleds down a 50 m tall hill and comes to a stop. How much work…
A: Given Mass of person is m= 75 kg Height of hill is h= 50 m Acceleration due to gravity is g= 9.80…
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: A crate (weight = 40 N) is sliding down a ramp 10 m long. The normal force on the crate is 30 N.…
A: In physics, work is defined as the product of the force applied to an object and the distance over…
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: Work amounting to 12 Nm is needed to compress a spring to 4 m from its natural length of 1 m. How…
A: Given Work done in first compression is W1=12 Nm Compression of the spring in first case is ∆x1=4-1…
Q: A mover's dolly is used to pull up a 15kg refrigerator ramp into a house. The ramp is 2.10 m long…
A: length of ramp (d) = 2.10 m height (h) = 0.85 m mass of refrigerator = 15 kg force exerted up the…
Q: A 210g stone is raised to a height of 26m. the gravitational potential energy (in Joule) of the…
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Q: Bob lifts three 1x102kg books 2m above the ground. How much work must Bob do to lift one book
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Q: A 10 m chain is hanging from a tall building. The chain has a density of 1.5 kg/m. At the bottom of…
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Q: mr.berkley is driving his car down lake park at 21 m/s. He sees something in the road and slows down…
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Q: A 340g stone is raised to a height of 20m. the gravitational potential energy (in Joule) of the…
A:
Q: How much work is done by a person lifting a 4.1 kg object from the bottom of a well at a contact…
A: Given Data: The mass of an object is, m=4.1 kg The contact speed is, v=2.2 m/s The time required for…
Q: A woman lifts her 13 -newton child up 3 meters and carries her for a distance of 10 meters to the…
A: The child is given to have a weight of 13 N. Let W=13 N This child is being lifted by their mother,…
Q: A 99.2 kg object rises by 35.8 m. How much potential energy (in joules) has this object gained?
A: Potential energy(P) is given by:- P=mgh Where, m=99.2kg g=9.81m/s^2 h=35.8m
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 push your much-loved 3-kg physics book 1.25 m along a horizontal table top with a horizontal…
A:
Q: A 4kg box is sliding across the floor with a kinetic energy of 107 J. After friction has done -30 J…
A: Given, Mass, m= 4kg, KE, KE= 107 J, and Frictional force, Ff=-30 J.
Q: A weight lifter raises a 100 kg barbell to a height of 2 m. what is the barbell's potential energy?…
A:
Q: A cable with mass of 3kg/meter is used to lift a 250kg load from a 100 meter shaft. How much work is…
A: Given:- The linear mass density of the cable is μ= 3 kg/m The mass of the load is m = 250 kg The…
Q: You push a heavy box along the floor with a force of 775 N for a distance of 15 meters. The…
A: Given data The force applied by the person is given as F = 775 N. The distance traveled by the…
Q: A 300-kg roller coaster car starts 48m above the ground and is 5m above the ground at the end of the…
A:
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