Advertisements
Advertisements
प्रश्न
What do you understand by the clockwise and anti clockwise moment of force?
Advertisements
उत्तर
If the turning effect on the body is clockwise, moment of force is called the clockwise moment and is taken as negative.
If the turning effect on the body is anticlockwise, moment of force is called the anticlockwise moment and is taken as positive.
APPEARS IN
संबंधित प्रश्न
Differentiate between work and power.
The moment of a force 10 N about a point 0 is 4 Nm. Calculate the distance of point of application of force from the point 0.
A man spends 7.4 kJ energy in displacing a body by 74 m in the direction in which he applies force, in 2.5 s. Calculate the power spent (in H.P) by the man.
A boy takes 3 minutes to lift a 20 litre water bucket from a 20 m deep well, while his father does it in 2 minutes. Compare:
- the work, and
- power developed by them.
State and define the unit of force in the S.I. system.
How is 1 kgf related to the SI unit of force?
What do you understand by work? Is work a scalar or a vector quantity?
State the condition when the work done by the force is negative.
A force of 1 kgf displaces a body by a distance of 10 cm
(i) in direction of force,
(ii) normal to the force
(iii) at an angle of 60° to the direction of the force.
Calculate the amount of work done in each case. (Take: g = 9.8 ms−2 )
