1.O SearchA crane slowly lifts a 215 - kg crate a vertical distance of 19 m.mgcraneH(a) How much work does the crane do on the crate?W crane(b) How much work does the gravity do on the crate?W=gravity(c) What is the total work done on the crate?W total =99+HH

Name: 1.O SearchA crane slowly lifts a 215 - kg crate a vertical distance o
Uploaded: 2024-03-20T06:57:25.000Z
Channel: Bartleby
Description: 1.O SearchA crane slowly lifts a 215 - kg crate a vertical distance of 19 m.mgcraneH(a) How much work does the crane do on the crate?W crane(b) How much work does the gravity do on the crate?W=gravity(c) What is the total work done on the crate?W to

Given data: Mass (m) = 215 kg Vertical distance (h) = 19 m Required: The work done by crane,…

Science

Physics

A crane slowly lifts a 215 - kg crate a vertical distance of 19 m. V mg F W crane (a) How much work does the crane do on the crate? W crane = total H (b) How much work does the gravity do on the crate? W gravity ✓ (c) What is the total work done on the crate? VI

A crane slowly lifts a 215 - kg crate a vertical distance of 19 m. V mg F W crane (a) How much work does the crane do on the crate? W crane = total H (b) How much work does the gravity do on the crate? W gravity ✓ (c) What is the total work done on the crate? VI

University Physics Volume 1

18th Edition

ISBN:9781938168277

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

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

Chapter7: Work And Kinetic Energy

Section: Chapter Questions

Problem 30P: Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down a 60.00...

See similar textbooks

Similar questions

A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N frictional force. He pushes in a direction 25.Oc below the horizontal. (a) What is the work done on the cart by friction? (b) What is the work done on the cart by the gravitational force? (c) What is the work done on the cart by the shopper? (d) Find the force the shopper exerts, using energy considerations. (e) What is the total work done on the cart?
Suppose a car travels 108 km at a speed of 30.0 m/s, and uses 2.0 gal of gasoline. Only 30 of the gasoline goes into useful work by the force that keeps the car moving at constant speed despite friction. (The energy content of gasoline is about 140 Mi/gal.) (a) What is the magnitude of the force exerted to keep the car moving at constant speed? (b) If the required force is directly proportional to speed, how many gallons will be used to drive 108 km at a speed of 28.0 m/s?
A man of mass 80 kg runs up a flight of stairs 20 m high in 10 s. (a) how much power is used to lift the man?(b) If the man’s body is 25 efficient, how much power does he expend?
A person in good physical condition can put out 100 W of useful power for several hours at a stretch, perhaps by pedaling a mechanism that drives an electric generator. Neglecting any problems of generator efficiency and practical considerations such as resting time: (a) How many people ‘would it take to nm a 4.O0-kW electric clothes dryer? (b) How many people would it take to replace a large electric power plant that generates 800 MW?
(a) What is the average useful power output of a person who does 6.00106J of useful work in 8.00 h? (b) Working at this rate, how long will it take this person to lift 2000 kg of bricks 1.50 m to a platform? (Work done to lift his body can be omitted because it is not considered useful output here.)
Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down a 60.00 slope at constant speed, as shown below. The coefficient of friction between the sled and the snow is 0.100. (a) How much work is done by fiction as the sled moves 30.0 m along the hill? (b) How much work is done by the rope on the sled in this distance? (c) What is the work done by the gravitational force on the sled? (d) What is the total work done?
(a) How long will it take an 850-kg car with a useful power output of 40.0 hp (1hp=746W) to reach a speed of 15.0 m/s, neglecting friction? (b) How long will this acceleration take if the car also climbs a 3.00-m-high hill in the process?
A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N frictional force. He pushes in a direction 25.0° below the horizontal. (a) What is the work done on the cart by friction? (b) What is the work done on the cart by the gravitational force? (c) What is the work done on the cart by the shopper? (d) Find the force the shopper exerts, using energy considerations. (e) What is the total work done on the cart?
A 5.0-kg box has an acceleration of 2.0m/s2 when it is pulled by a horizontal force across a surface with K=0.50 . Find the work done over a distance of 10 cm by (a) the horizontal force, (b) the frictional force, and (c) the net force. (d) What is the change in kinetic energy of the box?
(a) How fast must a 3000-kg elephant move to have the same kinetic energy as a 65.0-kg sprinter running at 10.0 m/s? (b) Discuss how the larger energies needed for the movement of larger animals would relate to metabolic rates.
A single force F(x)=4.0x (in newtons) acts on a 1.0-kg body. When x=3.5 m, the speed of the body is 4.0 m/s. What is its speed at x = 2.0 m?
Give an example of a situation in which there is a force and a displacement, but the force does no work. Explain why it does no work.