Advertisements
Advertisements
प्रश्न
The diagram shows a uniform metre rule weighing 100gf, pivoted at its centre O. Two weights 150gf and 250gf hang from the point A and B respectively of the metre rule such that OA = 40 cm and OB = 20 cm. Calculate :
the total clockwise moment about O
Advertisements
उत्तर
Total clockwise moment about O,
=250 gf x 20 cm= 5000 gf cm
संबंधित प्रश्न
Less force is needed when applied at a farther distance from the pivoted point.
State the effect of force F in of the following diagram.
State the S.I. unit of moment of force.
The moment of a force of 25 N about a point is 2.5 N m. Find the perpendicular distance of force from that point.
A wheel of diameter 2 m can be rotated about an axis passing through its center by a moment of force equal to 2.0 Nm. What minimum force must be applied on its rim?
State one factor on which the magnitude of a non-contact force depends. How does it depend on the factor stated by you?.
A body X of mass 5 kg is moving with velocity 20 m s-2 while another body Y of mass 20 kg is moving with velocity 5 m S-1. Compare the momentum of the two bodies.
A wheel of diameter 2 m is shown in the figure with the axle at O. A force F = 2 N is applied at B in the direction shown in the figure. Calculate the moment of force about
- the centre O, and
- the point A.
Define couple.
(i) What do you understand by the term couple of forces?
(ii) Calculate the moment of a couple shown in fig.
