Give an example for each of the following uses of a machine:
to obtain gain in force,
[3] Machines
Chapter: [3] Machines
Concept: undefined >> undefined
Work is the application of a ....... through a distance.
[3] Machines
Chapter: [3] Machines
Concept: undefined >> undefined
A boy does work when he pushes against a brick wall. (yes/no).
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
What is the SI unit of work?
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
Nm is the unit of .......
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
What is the work done when the object acted upon by a force remains at rest?
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
Is work done a scalar or a vector physical quantity?
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
What is the work done by the gravitational force of the earth on a satellite revolving around the earth?
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
What is the work when a load of 500 kg is lifted vertically by 5 m? Given, g = 10 ms-2. Express your answer in kilo joule.
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
A man lifts a mass of 10 kg from the floor to a shelf 4 meter high. If g = 10 ms-2, what is the work done?
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
What is the work done against gravity when a body is moved horizontally along a frictionless surface?
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
What do you mean by the term 'work'?
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
What are the quantities on which the work done depends?
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
When you move upstairs, do you perform some work?
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
What should be the angle between the directions of the displacement and the applied force so that the work done is zero?
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
Why is the work done on an object moving along a circular path zero?
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
A man carrying a suitcase in his hand is walking horizontally. What is the work done against gravity?
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
What is the work done on a body by the gravitational force towards the centre of the path acting when it moves along a circular path?
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
What is the work done on the earth by the gravitational force of the sun during its motion around the sun?
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
What do you mean by a kilo joule?
[2] Work, Energy and Power
Chapter: [2] Work, Energy and Power
Concept: undefined >> undefined
