Advertisements
Advertisements
Question
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.
Advertisements
Solution
(i) Moment of force = applied force x perpendicular distance from the line of action
Moment of force at O = 8 x 1.5 = 12 Nm
(ii) Momemnt of force = applied force x perpendicular distance from the line of line
Moment of force at P = 8 x 3 = 24 Nm
APPEARS IN
RELATED QUESTIONS
A nut is opened by a wrench of length 20 cm. If the least force required is 2N, find the moment of force needed to loosen the nut.
SI. unit of moment of force is
It is easier to open the door by pushing it at its free end.
State Newton's Second law of motion. Under what conditon does it take the form F = ma?
Calculate the acceleration produced in a body of mass 50 g when acted upon by a force of 20 N.
A body is acted upon by two forces of magnitude F but in opposite directions. State the effect of the force if both forces act at the same point of the body.
State two factors affecting the turning effect of a force.
Define non-contact forces.
State one factor on which the magnitude of a non-contact force depends. How does the magnitude of a non-contact force change along with distance?
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.
