Advertisements
Advertisements
Question
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.
Advertisements
Solution
Resultant force acting on the body = F - F = 0
moment of forces = 0 i.e no motion of the body
RELATED QUESTIONS
Name the factors affecting the turning effect of a body
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?
Thrust is the ............ force acting on a surface.
How does the effect of force differ when it is applied on a non-rigid body?
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.
State Newton's Second law of motion. Under what conditon does it take the form F = ma?
A car of mass 600 kg is moving with a speed of 10 ms-1 while a scooter of mass 80 kg us moving with a speed of 50 ms-1. Compare their momentum.
Classify the following amongst contact and non-contact forces.
magnetic 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.

State whether the moment of force is a scalar or vector quantity?
