Advertisements
Advertisements
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?
Advertisements
उत्तर
1) The force of 12 gf causes a clockwise moment.
2) Clockwise moment = 12 x 10 gf cm
= 120 gf cm
Anti clockwise moment = 20 x 6 gf cm
= 120 gf cm
∵ Clockwise moment = Anti clockwise moment
∴ The rod is in equilibrium.
3) If the direction of 20 gf force is reversed, it will also create a clockwise moment.
Resultant moment = (120 + 120) gf cm (clockwise)
= 240 gf cm
APPEARS IN
संबंधित प्रश्न
State the effect of force F in of the following diagram.
What do you mean by the clockwise and anti-clockwise moment of force?
The hand flour grinder is provided with a handle near the rim.
A potter turns his wheel by applying a force through the stick near the rim of wheel.
What are contact forces? Give two Example
State the condition when the change in the momentum of a body depends only on the change in its velocity.
A uniform metre scale can be balanced at the 70.0 cm mark when a mark when a mass 0.05 kg is hung from the 94.0 cm mark
- draw a diagram of the arrangement
- Find the mass of the metre scale
One joule is the amount of work done when a force of ......... moves a body through a distance of .......
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?
Calculate the minimum distance between point of application of force and axis of rotation of a rigid body, if a force 125 N produces a moment of force of 25.75 Nm.
