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प्रश्न
State one way to decrease the moment of a given force about a given axis of rotation.
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उत्तर १
Either decrease the force or decrease the perpendicular distance of force from the axis of rotation.
उत्तर २
decrease the perpendicular distance of force from axis of rotation.
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संबंधित प्रश्न
SI. unit of moment of force is
State the S.I. unit of moment of force.
State one factor on which the magnitude of a non-contact force depends. How does it depend on the factor stated by you?.
State the relationship between force, mass and acceleration. Draw graphs showing the relationship between Acceleration and mass for a constant force.
Classify the following amongst contact and non-contact forces.
gravitation force
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.
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.
Calculate the magnitude of the force of a couple, when the arm of the couple is 63 cm and the moment of the couple is 21 Nm.
Calculate the length of arm of couple, if a force of 13 N produces a moment of couple of 14.3 Nm.
A metal rod AB of length 80 cm is balanced at 45 cm from the end A with 100 gf weights suspended from the two ends.
- If this rod is cut at the center, C, then compare the weight of AC to the weight of BC. (Use >, < or =)
- Give a reason for your answer in (a).
