A sharp pin works better than a blunt pin. Explain the reason.
A sharp tip is provided at the end of a pin so that pressure [force/ area] exerted by it is maximum when it is pressed by a given force.
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20
What do you mean by the clockwise and anti-clockwise moment of force?
Clockwise moment of force โWhen the moment of force is in the clock wise direction. Anticlockwise moment โwhen the moment of force acts in anticlockwise directi
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20
Sate any one effect of a force when applied on a body
It can change the state of body. or A force can change the shape (and size) of an object.
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20
What is the equation used to calculate pressure?
pressure=force/area
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10
1 kgf = N (nearly)
10
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10
State one way to obtain greater moment of a given force about a given axis of rotation.
Increase the perpendicular distance of force from axis of rotation.
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banana
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gold
Win 50 points!
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fairy
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banana
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20
State any one factor which affect moment of force.
The magnitude of the force applied or The distance of line of action of the force from the axis of rotation.
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rocket
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fairy
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25
banana
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15
What is the S.I. unit of pressure
pascal
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20
What do you mean by atmospheric pressure?
โThe thrust due to atmospheric air on unit areaโ