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तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ८

Force acting on a given area is called pressure. - Science

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प्रश्न

Force acting on a given area is called pressure.

पर्याय

  • True

  • False

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उत्तर

Force acting on a given area is called pressure- true.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Force and Pressure - Exercises [पृष्ठ १९]

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सामाचीर कलवी Science [English] Class 8 TN Board
पाठ 2 Force and Pressure
Exercises | Q III. 1. | पृष्ठ १९

संबंधित प्रश्‍न

How is force related to the momentum of a body?


Newton's second law of motion applicable in all condition is:

(a) `F = (Δp)/(Δt)`

(b) F = ma

(c) `F = M (Δv)/(Δt)`

(d) all three


A lead bullet of mass 20g, travelling with a velocity of 350 ms-1, comes to rest after penetrating 40 cm in a still target. Find:

1) the resistive force offered by the target and 

2) the retardation caused by it


The adjacent diagram shows a heavy roller, with its axle at O, which is to be raised on a pavement XY. If there is friction between the roller and pavement, show by an arrow on the diagram the point of application and the direction of force to be applied. If pivoted at O, now will it go up?


A body is acted upon by two forces of magnitude F, but in opposite directions. State the effect of the force if the two forces act at two different points of the body at a separation r.


Fill in the empty spaces


Can you give example for contact and non-contact forces?


Plotting a graph for momentum on the Y-axis and time on X-axis. the slope of the momentum-time graph gives


Two friends on roller-skates are standing 5 m apart facing each other. One of them throws a ball of 2 kg towards the other, who catches it, How will this activity affect the position of the two? Explain your answer.


Derive the unit of force using the second law of motion. A force of 5 N produces an acceleration of 8 m s–2 on a mass m1 and an acceleration of 24 m s–2 on a mass m2. What acceleration would the same force provide if both the masses are tied together?


Write true and false.

If mass increases, force decreases.


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