Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
APPEARS IN
संबंधित प्रश्न
A body is moved in a direction opposite to the direction of force acting on it. State whether the work is done by the force or work is done against the force
State and define the S.I. unit of work.
A body, when acted upon by a force of 10 kgf, gets displaced by 0.5 m. Calculate the work done by the force, when the displacement is (i) in the direction of force, (ii) at an angle of 60° with the force, and (iii) normal to the force. (g = 10 N kg-1)
A body is provided at a point. A force of 20 N is applied at a distance of 40 cm from the pivot. Find the moment of force about the pivot.
In which one of the following cases is the work done more? When the angle between the direction of motion and that of the force is (i) 90° (ii) 0°.
How is 1 kgf related to the SI unit of force?
A bullet fired against a window glass pane makes a hole in it without any cracks while a stone striking the same glass pane smashes it; explain with reason.
Derive a relation between the S.I. and C.G.S. unit of force.
Calculate the work done when:
A car is moved on a rough road through 30 m against a frictional resistance of 75 N.
A machine raises a load of 750 N through a height of 16 m in 5 seconds. Calculate the power at which the machine works.
