MomentsdensityPressure MCQ2
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Questions and Answers

What is the formula for the moment of a force?

  • M = F + d
  • M = F × d (correct)
  • M = F - d
  • M = F / d

What is the turning effect of a force called?

  • Acceleration
  • Moment (correct)
  • Velocity
  • Torque

What does Law 1 of Equilibrium state?

  • The sum of forces is not zero
  • The vector sum of forces in any direction is zero (correct)
  • Clockwise moments equal anti-clockwise moments
  • The vector sum of moments is zero

According to Archimedes Principle, what force is experienced by a body immersed in a fluid?

<p>Upthrust equal to the weight of the fluid displaced (A)</p> Signup and view all the answers

Which law states that pressure is inversely proportional to volume for a fixed mass of gas at constant temperature?

<p>Boyle's Law (B)</p> Signup and view all the answers

What keeps the moon orbiting the earth and the earth attached to its atmosphere?

<p>Force of gravity (C)</p> Signup and view all the answers

According to Boyle's Law, how does pressure vary with volume for a fixed mass of gas at constant temperature?

<p>$p \propto \frac{1}{V}$ (A)</p> Signup and view all the answers

What is the formula for pressure in a fluid at a given depth?

<p>p = ρgh (A)</p> Signup and view all the answers

What force is responsible for keeping the Earth's atmosphere attached to Earth?

<p>Force of gravity (A)</p> Signup and view all the answers

According to Newton's Law of Universal Gravitation, how does the force between two point masses vary with distance?

<p>Inversely proportional to square of distance (B)</p> Signup and view all the answers

What is the Formual for pressure

<p>P = F/A (C)</p> Signup and view all the answers

What is the second law of equilibrium?

<p>The sum of the moments about any point is zero (B)</p> Signup and view all the answers
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