Advertisements
Advertisements
Question
How does the magnitude of this non-contact force on the two bodies depend on the distance of separation between them?
Advertisements
Solution
The magnitude of non-contact forces acting on two bodies depends on the distance of separation between them. The magnitude of force decreases with an increase in separation and increases as the separation decreases. It varies inversely as the square of the distance of separation.
APPEARS IN
RELATED QUESTIONS
A brass ball is hanging from a stiff cotton thread. Draw a neat labeled diagram showing the forces acting on the brass ball and cotton thread
State the effect of force F in of the following diagram.
Name of S.I. unit of the rate of change in momentum.
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.
Write the expression for calculating the moment of force about a given an axis.
A body is acted upon by two forces of magnitude F but in opposite directions. State the effect of the force if both forces act at the same point of the body.
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 difference of anticlockwise and clockwise moment
Write the expression for calculating the moment of force about a given point.
The perpendicular distance between the point of application of force and turning point is 1.75 m when a force of 80 N acts on a rigid body. Calculate the moment of force.
The diagram in Fig shows two forces F1 = 5 N and F2 = 3 N acting at points A and B respectively of a rod pivoted at a point O, such that OA = 2 m and OB = 4 m.
Calculate:
- the moment of force F1 about O.
- the moment of force F2 about O.
- total moment of the two forces about O.
