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संबंधित प्रश्न
Where can a body execute free vibrations?
Write the expression for the moment of force about a given axis of rotation.
A rocket is moving at a constant speed in space by burning its fuel and ejecting out the burnt gases through a nozzle. Answer the following
1) Is there any change in the momentum of the rocket? if yes, what causes the change in momentum?
2) Is there any force acting on the rocket? if yes, how much?
Is moment of force a scalar or a vector?
Write the expression for calculating the moment of force about a given axis.
Two forces each of magnitude 10 N act vertically upwards and downwards respectively at the two ends A and B of a uniform rod of length 4 m which is pivoted at its midpoint O as shown in the figure. Determine the magnitude of the resultant moment of forces about the pivot O.
Classify the following amongst contact and non-contact forces.
magnetic force
(i) What do you understand by the term couple of forces?
(ii) Calculate the moment of a couple shown in fig.
A jack screw is provided with a long arm. Explain why?
