Physics
The diagrams below show a force F = 40 N acting on a rod AB pivoted at A in different directions. Identify the correct statement.
- P and S have opposite moments.
- The magnitude of the moment of force is maximum in R.
- The magnitude of the moment of force is maximum in P and Q.
- The moment of force in R is negative.
Answer
The magnitude of the moment of force is maximum in P and Q.
Reason
Option 1 Incorrect:
P & Q have same anticlockwise moment.
Option 2 Incorrect:
Maximum moment of force is for 90°. Here angle is not 90°.
Option 3 Correct:
Moment of force = force x perpendicular distance from pivot point.
For both P and Q, perpendicular distance from pivot point is maximum
Hence, the magnitude of the moment of force is maximum in P and Q.
Option 4 Incorrect:
R has anticlockwise moment which is taken positive.
Related Questions
Which of the following diagrams shows the correct path of light through the lens?
The diagrams below show four pulley systems. State which of the statements following the diagrams is true.
- There are three pulley systems with V.R. = 2 and one pulley system with V.R. = 1.
- There are two pulley systems with V.R. = 2, one pulley system with V.R. = 3 and one pulley system with V.R. = 1.
- There are two pulley systems with V.R. = 2, one pulley system with V.R.= 3 and one pulley system with V.R. = 4.
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In the diagram below, four cones are depicted, each with a height of 12 cm. The position of the center of gravity is indicated by dots located at 9 cm, 8 cm, 4 cm, and 3 cm from the apex of each cone. Which of these cones is completely solid?
- 9 cm
- 8 cm
- 4 cm
- 3 cm
The given figure depicts the graph of work done vs. displacement under a constant force of 10 N. Which of the following statements is true?
- Force is acting at an angle of 0° with the displacement.
- Force is acting at an angle of 45° with the displacement.
- Force is acting at an angle of 60° with the displacement.
- Force is acting at an angle of 90° with the displacement.