Physics
The diagram shows wheel O pivoted at point A. Three equal forces F1, F2 and F3 act at point B on the wheel.
(a) Which force will produce maximum moment about A?
(b) Give a reason for your answer in (a).
Force
ICSE 2023
77 Likes
Answer
(a) Force F1 produces the maximum moment.
(b) Moment of force = force x perpendicular distance from the point of application of the force to the pivot point.
As the three forces are equal in magnitude, the magnitude of moment of force will depend on the perpendicular distance from the point of application of the force to the pivot point.
The perpendicular distance from the line of action of F1 to the pivot point A is equal to the diameter of the wheel, while the perpendicular distance from line of action of F2 and F3 is less than the diameter, therefore, the moment produced by F1 will be greater than the moments produced by F2 and F3.
Answered By
47 Likes
Related Questions
Calculate the power spent by a crane while lifting a load of mass 2000 kg, at velocity of 1.5 ms-1. (g = 10 ms-2).
(a) What should be the angle between the direction of force and the direction of displacement, for work to be negative?
(b) Name the physical quantity obtained using the formula , where U is the potential energy and h is the height.
(a) When does the nucleus of an atom tend to become radioactive?
(b) Name a single pulley in which displacement of load and effort is not the same.
(c) State one advantage of this pulley.
(a) What is the position of centre of gravity of a triangular lamina?
(b) When this triangular lamina is suspended freely from any one vertex, what is the moment of force produced by its own weight in its rest position?