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प्रश्न
State two factors affecting the turning effect of a force.
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उत्तर
Moment of force about a point depends on the following two factors:
- The magnitude of the force applied.
- The distance of line of action of the force from the axis of rotation.
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संबंधित प्रश्न
A half metre rod is pivoted at the centre with two weights of 20gf and 12gf suspended at a perpendicular distance of 6 cm and 10 cm from the pivot respectively as shown below.
1) Which of the two forces acting on the rigid rod causes clockwise moment?
2) Is the rod in equilibrium?
3) The direction of 20 kgf force is reversed. What is the magnitude of the resultant moment of the forces on the rod?
What is thrust?
Write an expression for the change in momentum of a body of mass m moving with velocity v if v << c.
State the relationship between force, mass and acceleration. Draw graphs showing the relationship between Acceleration and mass for a constant force.
Give two examples of a couple's actions in our daily life.
A steering wheel of diameter 0.5 m is rotated anticlockwise by applying two forces each of magnitude 6 N. Draw a diagram to show the application of forces and calculate the moment of forces applied.
Give an example for each of the following uses of a machine:
to change the point of application of force
A meter scale is provided at 10 cm mark and is balanced by suspending 400 g from 0 cm mark (fig.). Calculate the mass of meter scale.
Under what condition will a set of gears produce a gain in torque.
Two unlike forces (parallel) of 10 N and 25 N act at a distance of 12 cm. from each other. Find the point about which the body balance.
