You lift your school case from the floor and on the table with steady speed. The...
You lift your school case from the floor and on the table with steady speed. The table has 1.2 m height and by lifting the school case you use 147 N force and it takes you 2 seconds.
a) How much work do you do by lifting the school case?
b) What is the power you use by lifting the school case?
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You lift your school case from the floor and on the table with
steady speed. The...
Suppose you slowly and at constant speed lift a 4 N book from the floor to...
Suppose you slowly and at constant speed lift a 4 N book from the floor to a shelf 2 m above the floor. (a) While your lifting it the net force on the book is zero(True,False) (b) While your lifting it the force by your hand against the book is 4 N(True,False) (c) The net work done on the book is zero(True,False) (d) The work done by your hand on the book is 8 Joules(True,False) (e) The net work done...
A 5.0 kg dog sits on the floor of an elevator that is accelerating downward at...
A 5.0 kg dog sits on the floor of an elevator that is accelerating downward at 1.20 m/s^2. What is the magnitude of the normal force of the elevator floor on the dog? An astronaut's weight on earth is 80 N. What is his weight on Mars where g = 3.76 m/s^2? (a) How much work does an elevator motor do to lift a 1000 kg elevator a height of 100 m? (b) How much power does the motor supply...
(1) Suppose you lift a stone that has a mass of 5.3 kilograms off the floor...
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Imagine that there is a heavy box sitting on the floor that you want to lift...
Imagine that there is a heavy box sitting on the floor that you want to lift up & carry across the room. A. How do the forces compare: i. The force initially needed to lift the box off the ground ii. The force needed to continue lifting the box (vertically) in order to then carry it across the room? B. Explain why this makes sense to you.
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You are using a rope to lift a 14.5 kg crate of fruit. Initially you are lifting the crate at 0.500 m/s. You then increase the tension in the rope to 190 N and lift the crate an additional 1.25 m. a) During this d motion, how much work is done on the crate by the tension force? b) Find the work done by the force of gravity. c) Find the work done by the net force? d) What is...
A pump is required to lift 780 kg of water per minute from a well 14.2 m deep and eject it with a speed of 19.0 m/s. A)...
A pump is required to lift 780 kg of water per minute from a
well 14.2 m deep and eject it with a speed of 19.0 m/s.
A) How much work is done per minute in lifting the
water?
B) How much work is done in giving the water the kinetic
energy it has when ejected?
C) What must be the power output of the pump?
Problem 6.85 6 of 6 Constants A pump is required to lift 780 kg...
How much work do you do, when you lift a mass (4.0kg) from the ground to...
How much work do you do, when you lift a mass (4.0kg) from the ground to a height of 6.0 m in 11 seconds? Answer: ____ J
You are moving into an apartment and take the elevator to the 6th floor. Suppose your...
You are moving into an apartment and take the elevator to the 6th floor. Suppose your weight is 730 N and that of your belongings is 980 N. (a) Determine the work done by the elevator in lifting you and your belongings up to the 6th floor (15.2 m) at a constant velocity. (b) How much work does the elevator do on you alone (without belongings) on the downward trip, which is also made at a constant velocity?
To work on your car you use a hydraulic lift as shown in the diagram. It...
To work on your car you use a hydraulic lift as shown in
the diagram. It confines a fluid with ρ = 2.16
kg/m3.Your car has mass Mcar = 980 kg. The lift piston
has mass Mpiston = 225 kg. The input piston (on the left) is
massless and has an area of 0.785 m2. The lift piston
(on the right) has an area of 4.14 m2.
1. The lift piston base and the input piston base are at
the...
you lift a 2 kg box from the first to the second floor of a building...
you lift a 2 kg box from the first to the second floor of a building by climbing the stairs and perform 300j of work. how much work is needed to lift the box, straight up vertically, from the first to the second floor of the same building
A 5.0 kg dog sits on the floor of an elevator that is accelerating downward at 1.20 m/s^2. What is the magnitude of the normal force of the elevator floor on the dog? An astronaut's weight on earth is 80 N. What is his weight on Mars where g = 3.76 m/s^2? (a) How much work does an elevator motor do to lift a 1000 kg elevator a height of 100 m? (b) How much power does the motor supply...
A pump is required to lift 780 kg of water per minute from a
well 14.2 m deep and eject it with a speed of 19.0 m/s.
A) How much work is done per minute in lifting the
water?
B) How much work is done in giving the water the kinetic
energy it has when ejected?
C) What must be the power output of the pump?
Problem 6.85 6 of 6 Constants A pump is required to lift 780 kg...
To work on your car you use a hydraulic lift as shown in
the diagram. It confines a fluid with ρ = 2.16
kg/m3.Your car has mass Mcar = 980 kg. The lift piston
has mass Mpiston = 225 kg. The input piston (on the left) is
massless and has an area of 0.785 m2. The lift piston
(on the right) has an area of 4.14 m2.
1. The lift piston base and the input piston base are at
the...
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