Answered: Lifing a weight to a height of 20 m…

Lifing a weight to a height of 20 m takes 20 s for one crane and 10 s for another. Is there any difference in the amount of work done on the weight by each crane?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter8: Potential Energy And Conservation Of Energy

Section: Chapter Questions

Problem 5CQ: What is the dominant factor that affects the speed of an object that started from rest down a...

See similar textbooks

Related questions

Q: A force of 6 pounds is required to hold a spring stretched 0.3 feet beyond its natural length. How…

Q: What is the work done by the force pulling a block 1 meter with two 0.5 kg masses on it?

A: We know, Workdone=Force ×displacement

Q: a worker pushes horizontally on a large crate with a force of 215 N, and the crate is moved 3.5 m.…

Q: how much more work will be required to stretch it an additional 4.0 cm?

Q: If a person of mass 100.0kg climbs a 2.00m high set of stairs in 4.00s, how much work do they do?

A: Given data: The mass of person is m=100 kg. Height of stairs is h=2.00 m. Time taken is t=4.00 s.

Q: If you pull a 9 kg mass vertically up 1.6 m at constant velocity, how much work do you do?

A: Given Mass= 9[kg] Height to which the mass is pulled up vertically= 1.6[m] Work is said to be done…

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: An apple weighing 1 N falls throughas a distance of 1 m. How much work is done on the apple by the…

A: weight of apple(W)= 1N Distance(d)=1m Work done=F.d=Fdcosθ F is force θ is angle between force and…

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 is it that the work done in holding a bag w above the floor is 0?

A: GivenF=1 N1 m above the floor

Q: A force of 7 pounds is required to hold a spring stretched 0.5 feet beyond its natural length. How…

Q: is attached to a 20m hanging rope that weights 0.3 N/m. The monkey climbs the rope up to

A: Given-Force F1=5NWeight =0.3 N/mLength of rope L=20 m

Q: How far must a 50 N force need to push an object to do 10 J of work? Your answer: 0.2 m 5 m 40 m 60…

A: Here given a force of 50 N. The workdone is 10 J.We have to calculate the distance covered by that…

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

Q: A ball of 0.1 kg is dropped from rest. When it falls through a distance of 2 m, the work done by the…

A: The expression for work done is, W=F×d F=force,d=dispalcement…

Q: a helicopter lifts a 100kg crate straight up via cable, with an acceleration of 0.8m/s. if the crate…

A: mass = 100 kg acceleration = 0.8 m/s2distance = 5 m Apparent weight = m(g+a) = 100 (10+0.8) = 1080 N…

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 2 kg object slides across a horizontal surface with an initial speed of 6.53 m/s. If the object…

A: Given- Mass of object m= 2kg Initial velocity v=6.53 m/s

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: A hill is 100 m long and makes an angle of 12° with the horizontal. As a 50-kg jogger runs up the…

A: Given : Length of the hill, l = 100 m The hill makes an angle of 12 degrees with the horizontal.…

Q: A 5.7 kg box is pushed sideways with a force whose magnitude is 191 N. When the box has slid 0.5 m,…

A: Mass of the box, Magnitude of the force, Displacement of the box, The work done by the push is…

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: You push your much-loved 3-kg physics book 0.83 m along a horizontal table top with a horizontal…

Q: A 6.0 kg box slides a 12 m distance on ice. If the coefficient of friction is 0.21, what is the work…

A: Given data: Mass (m) = 6.0 kg Distance (s) = 12 m Coefficient of friction (μ) = 0.21 Required: Work…

Q: A child drags a toy behind him on the ground. The coefficient of friction is 0.44 and the toy is…

Q: How much work is required to lift a 4.5 kg backpack 2.0m to put it on ?

Q: A body having 7 kg of mass moves with a velocity of 20 m/s covers a vertical height of 8.75 m. What…

A: Given data: Mass, m = 7kg velocity, v = 20m/s Height, h = 8.75m g = 10m/s2

Q: How much work does a sled dog do if she pulls with a force of 55 N on a horizontal track over a…

A: Here, Force and displacement are in the same direction, Therefore, Work done= Force x Distance…

Q: In a training, you are doing a vertical climb using a rope to lift yourself by 5.0 m in 2 s. If you…

A: Given data: Height (h) = 5.0 m Time (t) = 2 s Mass (m) = 55 kg Required: Work done (W) and Power…

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

Q: Suppose it takes a force of 42 N to hold a spring that has been stretched from its natural length of…

A: Given : Force to stretch the spring from 15 cm to 18 cm, F1 = 42 N Elongation in this case, x1 = 18…

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: A 10 kg barbell is rolling down a hill. There is no friction or air resistance acting on it, only…

A: Mass of the barbell is m = 10 kg Initial speed is u = 2 m/s Final speed is v = 7 m/s The only force…

Q: How much work is it to lift a 25 kg sack of potatoes at a constant speed vertically 7.5 m?

A: Write the given values with suitable variables. m=25 kgh=7.5 m Here, m denotes the mass and h…

Q: What is the dominant factor that affects the speed of an object that started from rest down a…

A: Work done on an object

Q: Lifting a weight to a height of 20 m takes 20 s for one crane and 10 s for another. Is there any…

A: Given: height,h = 20 m t = 20 s t' = 10 s

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: Why does the force of gravity does no work on a car that rolls down a hill but no work when it rolls…

A: Actually there is a small mistake in the given question. The question is the force of gravity does…

Q: A mouse of mass 20.0 g falls 160 m down a vertical mine shaft and lands at the bottom with a speed…

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…

Q: A loaded grocery cart of mass 24.5 kg is pushed along an aisle by an applied force of 14.2 N [22.5o…

A: Given: The applied force is 14.2 N. The mass of the object is 24.5 kg. The angle between applied…

Q: A weightlifter raises a 150-kg barbell from the floor to a height of 2.2 m in 0.80 s. What is his…

Q: A worker pushes horizontally on a large crate with a force of 230 N, and the crate is moved 3.6 m.…

A: An applied force by a worker, F=230 N The distance moved by a crate, d=3.6 m

Question

Lifing a weight to a height of 20 m takes 20 s for one crane
and 10 s for another. Is there any difference in the amount of
work done on the weight by each crane?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

Shown below is a 40-kg crate that is pushed at constant velocity a distance 8.0 m along a 30 Incline by the horizontal force . The coefficient of kinetic friction between the crate and the incline is k=0.40 . Calculate the work done by (a) the applied force, (b) the frictional force, (c) the gravitational force, and (d) the net force.
What is the dominant factor that affects the speed of an object that started from rest down a frictionless incline if the only work done on the object is from gravitational forces?
Compare the work required to accelerate a car of mass 2000 kg from 30.0 to 400 km/h with that required for an acceleration from 50.0 to 60.0 km/h.
Cite two examples in which a force is exerted on an object without doing any work on the object.
Does the work done in lifting an object depend on how fast it is lifted? Does the power expended depend on how fast it is lifted?
Suppose that the sled plus passenger of the preceding problem is pushed 20 m across the snow at constant velocity by a force directed 30 below the horizontal. Calculate (a) the work of the applied force, (b) the work of fiction, and (c) the total work.
A rope having a total mass of 0.4 kg and total length 4 m has 0.6 m of the rope hanging vertically down off a work bench. How much work must be done to place all the rope on the bench?
Can the power expended by a force be negative?
. In Figure 3.10, the rock weighs 100 lb and is lifted 1 ft by the lever. (a) How much work is done? (b) The other end of the lever is pushed down 3 ft while lifting the rock. What force had to act on that end?
Calculate the kinetic energies of (a) a 2000.0-kg automobile moving at 100.0 km/h; (b) an 80.-kg runner sprinting at 10. m/s; and (c) a 9.11031 -kg electron moving at 2.0107m/s .
In the dangerous sport of bungee jumping, a daring student jumps from a hot air balloon with a specially designed elastic cord attached to his waist. The unstretched length of the cord is 25.0 m, the student weighs 7.00 102 N, and the balloon is 36.0 m above the surface of a river below. Calculate the required force constant of the cord if the student is to stop safely 4.00 m above the river.
In a common physics demonstration, a bowling ball is suspended from the ceiling by a rope. The professor pulls the ball away from its equilibrium position and holds it adjacent to his nose, as shown below. He releases the ball so that it swings directly away from him. Does he get struck by the ball on its return swing? What is he trying to show in this demonstration?