Advertisements
Advertisements
प्रश्न
(i) What do you understand by the term couple of forces?
(ii) Calculate the moment of a couple shown in fig.
Advertisements
उत्तर
(i) Two equal and opposite parallel forces acting along different lines on a body constitute a couple.
(ii) Moment of couple = either force x perpendicular distance
= 4 x 10
= 40 Nm
APPEARS IN
संबंधित प्रश्न
The S.I. unit of force is kgf. (kilogram-force)
Moment of force =............... × distance of force from the point of turning.
State one way to obtain greater moment of a given force about a given axis of rotation.
State the condition when the change in the momentum of a body depends only on the change in its velocity.
The stone of hand flour grinder is provided with a handle near its rim. Give reason.
A nut is opened by a wrench of length 10 cm. if the least force required is 5.0 N. find the moment of force needed to turn the nut.
The diagram in the figure shows a uniform metre rule weighing 100 gf, pivoted as its centre O. two weight 150 gf and 250 gf hang from the point A and B respectively of the metre rule such that OA = 40 cm and OB = 20 cm . Calculate
the total anticlockwise moment about o.
Fig. shows a uniform meter scale weighing 100 N pivoted at its centre. Two weights of 500 N and 300 N are hung from the ruler as shown in fig.
(i) Calculate total clockwise and anticlockwise moments.
(ii) Calculate difference in clockwise moment and anticlockwise moment.
(iii) Calculate the distance from O where a 100 N weight should be suspended to balance the meter scale.
What is meant by the term ‘moment of force’? If the moment of force is assigned a negative sign then will the turning tendency of the force be clockwise or anti-clockwise?
A door lock is opened by turning the lever (handle) of length 0.2 m. If the moment of force produced is 1 Nm, then the minimum force required is ______.
