Advertisements
Advertisements
प्रश्न
The figure shows two forces each of magnitude 10 N acting at the point A and B at a separation of 50 cm, in opposite directions. Calculate the resultant moment of two forces about the point.
- A,
- B and
- O situated exactly at the middle of the two forces.
Advertisements
उत्तर
Moments of force = Force × distance
F = 10 N at A and B
distance between them = 50 cm
= `50/100`
= 0.5 m
i. Moment of force at A = 10 × 0.5
= 5 N m (clockwise)
ii. Moment of force at B = 10 × 0.5
= 5 N m (clockwise)
iii. Moment of force at O = 2.5 + 2.5
= 5 N m (clockwise)
APPEARS IN
संबंधित प्रश्न
State two effects of a force when applied on a body.
Write the expression for the moment of force about a given axis of rotation.
A tall building has wide foundations.
Find the moment of force of 20 N about an axis of rotation at distance 0.5 m from the force.
A spanner of length 10 cm is used to open a nut by applying a minimum force of 5.0 N. Calculate the moment of force required.
State the relationship between force, mass and acceleration. Draw graphs showing the relationship between Acceleration and force for a constant mass.
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.
Fig. shows a uniform meter scale weighing 100 N pivoted at its centre. Two weights of 500 N and 300 N are hung from the ruler as shown in fig.
(i) Calculate total clockwise and anticlockwise moments.
(ii) Calculate difference in clockwise moment and anticlockwise moment.
(iii) Calculate the distance from O where a 100 N weight should be suspended to balance the meter scale.
State two factors on which moment of the force about a point depends.
Clockwise moment produced by a force about a fulcrum is considered to be ______.
