What is the work done in lifting a 60kg block to a height of 20 m?
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Q: How much potential energy does a person of mass 75 kg have if they are standing at the top of a…
A: The mass of a person is, m=75 kg The height of a building is, h=74.1 m
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A: Given : m = 84 kg h = 1.20 m
Q: A spring exerts a force of 6 N when it is stretched from its natural length of 4 m to a length of 4…
A: Given data The force exerted is given as F = 6 N. The natural length is given as l = 4 m. The…
Q: A force of 30 N acts on a body and moves it through a distance of 5 m in the direction of force.…
A: Given data: Force (F) = 30 N Distance (d) = 5 m Angle between displacement and force (θ) = 0°…
Q: How much work is required to raise a child of mass 35 kg up to 1.5 meters high? answer should be in…
A: Given Mass (m) = 35 kg Height(h) = 1.5 m Required energy will be equal to the increase in…
Q: A 2.5 kg toy car accelerates from rest to a velocity of 2 m/s in 9 seconds. The work done by the…
A: Given: The mass of the object is 2.5 kg. The initial velocity of the object is 0 m/s. The final…
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 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: if you do 20 J of work lifting a rock weighing 30 N, how far will you lift it?
A: Write the given values with the suitable variables. W=20 JP=30 N Here, W is the required work and P…
Q: A force 50 N is required to maintain a spring stretched from its natural length 9 cm to a length of…
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Q: A student who weighs 546 N climbs a stairway (vertical height of 3.2 m) in 27 s. (a) how much work…
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Q: A force of 60 N used to push a chair across a room does 300 J of work. How far does the chair move…
A: Applied force (F) = 60 N Work done (W) = 300 Joules
Q: student who weighs 557 N climbs a stairway (vertical height of 2.7 m) in 26 s. (a) How much work is…
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Q: A toy elevator is raised from the ground floor to the second floor in 20 seconds. The power needed…
A: Given Data: The time taken is, t = 20 s. The work done is, W = 1000 J. The power gives the value…
Q: How much work must be done to stop a 1300-kg car traveling at 112 km/h? (Hint: You will need to…
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Q: A spring has a natural length of 8 in. If a force of 20 lb stretches the spring 1/2 in., find the…
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Q: A student of mass 50 kg caries a bag weighing 4000g from the ground floor to his class on the first…
A: Work done by boy = Change in potential energy Potential energy at some height H = E = MgH Where M…
Q: An electric motor with an efficiency of 85% drives an elevator that raises 10 tons at a height of 85…
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Q: . A 5,000 N force is applied to box at rest on a frictionless horizontal surface. How much useful…
A: Given data: Force (F) = 5000 N Distance (d) = 4 m Angle (θ) = 30°, from the horizontal Required:…
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 truck pulls a sled loaded with different kinds of vegetables at a certain distance. Suppose the…
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Q: A horse plows a 150 m-long furrow in 7 min, exerting a force of 750 N. What is its power output,…
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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: Calculate the work done in lifting a 500-N barbell 2.2 m above the floor. (What is the gain of…
A: Given: Force, F = 500 N Height, d = 2.2 m
Q: Suppose it takes 5 ft-lb of work to compress a spring from its natural length of 4 ft to a length of…
A: As per Hooke's law when an ideal spring is compressed then force proportional to the decrease in…
Q: f 27 J of work is needed to stretch a spring from 18 cm to 24 cm and another 45 J is needed to…
A: Given data as per question energy used is 27J
Q: How much work must be done to stop a 900-kg car traveling at 108 km/h? (Hint: You will need to…
A: Given data: Mass (m) = 900 kg Initial velocity (u) = 108 km/h Final velocity (v) = 0 m/s Required:…
Q: You must exert a force of 6.5 N on a book to slide it across a table. if you do 13 J of work in the…
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Q: Shelby weighs 750N and the staircase is 6m tall. She runs to the top of the stairs in 4.8 seconds.…
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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: A child pulls a shed upon snow covered hill. The child dose 480 J of work on the shed . If child…
A: Given Work done by child ,W = 480 J Displacement of child ,d = 16 m Work done is calculated by…
Q: A man can manage a power output of 180. How long will it take him to lift the a 40 kg box to a…
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Q: A box is pulled with a force of 45 N to produce a displacement of 11 m. If the angle between the…
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Q: Mama Mia has a mass of 65kg and is carrying a tray of turkey with a total weight of 55N. If she…
A: Given that,Mass : m = 65 (kg)Total weight : F = 55 (N)Distance : d = 4.2 (m)Angle : θ = 90°Here we…
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