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Frictional Force

When we talk ...

Question

When we talk of a force acting on a body, it usually means :

(a) electrical force
(b) balanced force
(c) unbalanced force
(d) nuclear force

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Solution

(c) unbalanced force
Unbalanced forces are responsible for producing a change in the state of motion of a body. So when we talk of a force, it usually means unbalanced force.

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Similar questions

Q. Define balanced forces and unbalanced force.
State whether balanced or unbalanced force acts on a object when it is staying rest on a table.

Q. Choose the correct statement(s):
Statement 1: Unbalanced forces can change the direction of motion of a body.
Statement 2: A balanced force is required to accelerate the body.
Statement 3: An object moves with a uniform velocity when balanced forces are acting on it or if there is no net force acting on it.
Statement 4: Balanced force cannot bring an object at rest to motion.

Q. (a) What do you understand by the terms "balanced forces" and "unbalanced forces"? Explain with examples.
(b) What type of forces − balanced or unbalanced − act on a rubber ball when we press it between out hands? What effect is produced in the ball?

Q. When a rubber balloon held between the hands is pressed, its shape changes. This happens because :

(a) balanced forces act on the balloon
(b) unbalanced forces act on the balloon
(c) frictional forces act on the balloon
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Q. If we release a magnet held in our hand, it falls to the ground. The force which makes the magnet fall down is an example of :

(a) balanced force
(b) unbalanced force
(c) magnetic force
(d) muscular force

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