Advertisements
Advertisements
प्रश्न
A wheel of diameter 3 m is shown in fig. 2 with axle at 0. A force F = 8 N is applied at Q in the direction shown in figure. Calculate the moment of force about:
(i) centre o, and
(ii) point p.
Advertisements
उत्तर
(i) Moment of force = applied force x perpendicular distance from the line of action
Moment of force at O = 8 x 1.5 = 12 Nm
(ii) Momemnt of force = applied force x perpendicular distance from the line of line
Moment of force at P = 8 x 3 = 24 Nm
APPEARS IN
संबंधित प्रश्न
A nut is opened by a wrench of length 20 cm. If the least force required is 2N, find the moment of force needed to loosen the nut.
How does the effect of force differ when it is applied on a rigid body?
The figure shows two forces each of magnitude 10 N acting at the point A and B at a separation of 50 cm, in opposite directions. Calculate the resultant moment of two forces about the point.
- A,
- B and
- O situated exactly at the middle of the two forces.
Classify the following amongst contact and non-contact forces.
gravitation force
Give an example of the following uses of a machine:
to change the direction of force
State two factors affecting the turning effect of a force.
The S.I. unit of moment of force is ______.
Calculate the length of arm of couple, if a force of 13 N produces a moment of couple of 14.3 Nm.
On a see-saw, two children of masses 30 kg and 50 kg are sitting on one side of it at distance 2 m and 2.5 m respectively, from its middle, where should a man of mass 74 kg sit to balance it?
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 ______.
