Physics
A wheel of diameter 2m is shown in figure with axle at O. A force F = 2N is applied at B in the direction shown in figure.
Calculate the moment of force about
(i) the centre O, and
(ii) the point A.
Force
143 Likes
Answer
We know from the question,
F = 2 N
Diameter = 2m
So, Radius or OB = 1m
(i) Moment of force at O = F x r
Substituting the values of F and r we get,
(ii) Moment of force at A = F x r
Substituting the values of F and r we get,
Answered By
102 Likes
Related Questions
Two forces each of magnitude 10N act vertically upwards and downwards respectively at the two ends A and B of a uniform rod of length 4m which is pivoted at its mid-point O as shown. Determine the magnitude of resultant moment of forces about the pivot O.
A nut is opened by a wrench of length 25 cm. If the least force required is 10 N, find the moment of force needed to turn the nut.
The moment of a force of 20 N about a fixed point O is 10 N m. Calculate the distance of the point O from the line of action of the force.
The diagram shows two forces F1 = 5N and F2 = 3N acting at points A and B of a rod pivoted at a point O, such that OA = 2m and OB = 4m
Calculate:
(i) the moment of force F1 about O.
(ii) the moment of force F2 about O.
(iii) total moment of the two forces about O.