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.

AcademicPhysicsNCERTClass 8

Given:
The following situations are given:

$(a)$. Squeezing a piece of lemon between the fingers to extract its juice.

$(b)$. Taking out paste from a toothpaste tube.

$(c)$. A load is 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.


To do:

We have to identify the agent exerting the force and the object on which it acts and also we have to state the effect of the force in each case.

Solution:


$(a)$. Squeezing a piece of lemon between the fingers to extract its juice:
AgentFingers are agents.
ObjectLemon is an object
EffectThe effect of force changes the shape of the lemon.

$(b)$. Taking out paste from a toothpaste tube:
AgentThe fingers of the person squeezing the tube are agents,
ObjectT toothpaste tube is an object,
EffectThe effect of the force can be observed as the paste coming out of the tube $(changes\ in\ shape)$.

$(c)$. A load is suspended from a spring while its other end is on a hook fixed to a wall:
AgentThe load suspended is the agent,
Object- The spring is the object,
EffectThe effort can be seen in the form of elongation of spring on suspension of the load $(change\ in\ shape)$.

$(d)$.  An athlete makes a high jump to clear the bar at a certain height:
AgentThe muscles of an athlete are agents
ObjectThe object is the athlete himself,
EffectThe effect of the force changes the state of motion of the athlete.
raja
Updated on 10-Oct-2022 13:24:42

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