Question

In the following situations identify the agent exerting the force and the object
on which it acts. State the effect of the force in each case?.
(a) Squeezing a piece of lemon between the fingers to extract its juice.
(b) Taking out paste from a toothpaste tube.
(c) A load suspended from a spring while its other end is on a hook fixed to
a wall.
(d) An athlete making a high jump to clear the bar at a certain height

Answer 1

Answer:

Solution

(a) In squeezing a piece of lemon, force responsible is muscular force which changes the shape of the lemon and the agent exerting the force is fingers.

(b) In taking out paste from a tube the force changes the shape of the tube and the agent exerting the force are the hands or fingers.

(c) In suspending a load from a spring while other end is on a hook fixed, the force changes the shape of the spring and the agent exerting the force is the load.

(d) In the high jump by the athlete the force acts on the ground and the ground helps the athlete in jumping. The effect os change in motion and the cause id muscular force or friction force.

Answer 2

Step-by-step-Explaination :-

Step 1 :

Try to understand & Write the answer :-

See in number (a),

• Squeezing a piece of lemon between the fingers (Muscular force) to extract its juice.

See , here we can clearly identify that Agent that is exerting the force is none other than the fingers . Also , the object on which that Agent is exerting the force is also simple that is the Lemon . So,

Thus ,

• Squeezing a piece of lemon between the fingers to extract its juice .

➢ Agent exerting the force ➸ Fingers .

➢ Object ➸ Lemon .

Hence ,

(a) Squeezing a piece of lemon ( object )between the fingers ( Agent exerting the force )to extract its juice.

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See in number (b) ,

• Taking out paste from a toothpaste tube .

See here , we can clearly once again identify that Agent that is exerting the force is none other than the Fingers . Also , the object on which that Agent is exerting the force is also simple that is the Toothpaste tube . So,

Thus ,

• Taking out paste from a toothpaste tube .

➢ Agent exerting the force ➸ Fingers .

➢ Object ➸ Tooth paste tube .

Hence ,

(b) Taking out paste from a toothpaste ( object) tube. (fingers) (Agent exerting the force) [hidden] .

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See in number (c) ,

• A load suspended from a spring while its other end is on a hook fixed to a wall.

See here , we can clearly once again identify that Agent that is exerting the force is none other than the load . Also , the object on which that Agent is exerting the force is also simple that is the Spring . So,

Thus ,

• A load suspended from a spring while its other end is on a hook fixed to a wall.

➢ Agent exerting the force ➸ Load .

➢ Object ➸ Spring.

Hence ,

(c) A load ( Agent exerting the force) suspended from a spring (object ) while its other end is on a hook fixed to a wall.

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See in number (d) ,

• An athlete making a high jump to clear the bar at a certain height .

See here , we can clearly once again identify that Agent that is exerting the force is none other than the Muscles . Also , the object on which that Agent is exerting the force is also simple that is the Athlete . So,

Thus ,

• An athlete making a high jump to clear the bar at a certain height

➢ Agent exerting the force ➸ Muscles .

➢ Object ➸ Athlete .

Hence ,

(d) An athlete (object) making a high jump to clear the bar at a certain height . Muscles [hidden] (Agent exerting the force) .

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❒ A little bit more :-

• Sometimes , the Agent exerting the force will not be given you will have to understand by common sense . Such examples are given in these cases as of no. b and d .
• Also , we can squeeze a lemon by it fingers only . So , common sense. Also , to take out Toothpaste we need Fingers . And , an athlete does so much high jump for only one reason that is to make his body stronger . Hence , this are just common sense.
• In grammar also we say " Bring a glass of water " . Here , also it is not mentioned (you) but you can understand by common sense.

✪ Here , also it can ask to find what effect it had on the objects .

1. Effect ➢ Change in shape of the Lemon .
2. Effect ➢ Change in shape of the Toothpaste tube .
3. Effect ➢ Change in shape of the spring .
4. Effect ➢ Change in state of motion .

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