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प्रश्न
The spanner (or wrench) has a long handle.
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उत्तर
Spanner has a long handle to produce larger turning moment and small force is applied at the end of handles.
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संबंधित प्रश्न
State one way to decrease the moment of a given force about a given axis of rotation.
The hand flour grinder is provided with a handle near the rim.
A wheel of diameter 2 m can be rotated about an axis passing through its center by a moment of force equal to 2.0 Nm. What minimum force must be applied on its rim?
Calculate the acceleration produced in a body of mass 50 g when acted upon by a force of 20 N.
A spanner (or wrench) has a long handle. Why?
The diagram shows two forces F1 = 5 N and F2 = 3N acting at point A and B of a rod pivoted at a point O, such that OA = 2m and OB = 4m
Calculate:
- Moment of force F1 about O
- Moment of force F2 about O
- Total moment of the two forces about O.
A wheel of diameter 3 m is shown in fig. 2 with axle at 0. A force F = 8 N is applied at Q in the direction shown in figure. Calculate the moment of force about:
(i) centre o, and
(ii) point p.
(i) What do you understand by the term couple of forces?
(ii) Calculate the moment of a couple shown in fig.
State when the moment of force is positive and when it is negative.
