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प्रश्न
Give an example of the following uses of a machine:
to change the direction of force
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उत्तर
A pulley is used to change the direction of application of force.
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संबंधित प्रश्न
Name the factors affecting the turning effect of a body
Moment of force =............... × distance of force from the point of turning.
Thrust is the ............ force acting on a surface.
State the S.I. unit of moment of force.
What do you understand by the clockwise and anticlockwise moment of force? When is it taken positive?
The moment of a force of 10 N about a fixed point O is 5 N m. Calculate the distance of the point O from the line of action of the force.
A nut is opened by a wrench of length 10 cm. if the least force required is 5.0 N. find the moment of force needed to turn the nut.
A uniform metre rule of weight 10gf is pivoted at its 0 mark.
What moment of force depresses the rule?
Classify the following amongst contact and non-contact forces.
electrostatic force
Calculate the magnitude of the force of a couple, when the arm of the couple is 63 cm and the moment of the couple is 21 Nm.
