Newtonian Mechanics Part 1 grade 10

What is the principle of moment in physics?

• Sum of clockwise moments = Sum of anticlockwise moments

• Sum of clockwise moments = Sum of clockwise moments

• Sum of clockwise moments ≠ Sum of anticlockwise moments

• Sum of anticlockwise moments = couple

Explain the concept of a couple in physics.

• A couple in physics is a measurement unit for energy in the field of physics.

• A couple in physics is a term used to describe a romantic relationship between two physicists.

• A couple in physics refers to a pair of people working together on a physics problem.

• A couple in physics consists of two equal and opposite forces that do not share a line of action, resulting in a pure rotational effect.

How do you calculate the moment of force?

• Moment of force = Force - Perpendicular Distance

• Moment of force = Force / Perpendicular Distance

• Moment of force = Force + Perpendicular Distance

• Moment of force = Force x Perpendicular Distance

Define the center of gravity of an object.

• The center of gravity is always located at the top of the object.

• The center of gravity is the point where the object is heaviest.

• The center of gravity of an object is the point where the entire weight of the object can be considered to act.

• The center of gravity is a fixed point that does not change.

What is the significance of stability of bodies in physics?

• Stability of bodies in physics is crucial for analyzing structures, predicting behavior, and ensuring safety in various applications.

• Stability of bodies in physics is irrelevant for practical applications.

• Stability of bodies in physics only applies to living organisms.

• Stability of bodies in physics has no impact on safety measures.

What are the equilibrium conditions in physics?

• Net force is zero and net torque is non-zero

• Net force is non-zero and net torque is non-zero

• Net force is non-zero and net torque is zero

• Net force is zero and net torque is zero

A body in motion is said to be in equilibrium when it is

• moving with uniform velocity.

• at rest.

• accelerated by a force.

• moving in an indefinite path.

Calculate the moment of force when given the force and distance from the pivot point.

• Moment of force = Force / Distance

• Moment of force = Force + Distance

• Moment of force = Force x Distance

• Moment of force = Distance / Force

Why is it important to understand the center of gravity of an object?

• To determine stability and behavior under external forces.

• To determine the smell of the object

• To find the color of the object

• To predict the weather

Explain how the stability of bodies is affected by their center of gravity.

• The stability of bodies is affected by their center of gravity as a lower center of gravity leads to increased stability.

• The center of gravity has no impact on the stability of bodies

• A higher center of gravity leads to increased stability

• The stability of bodies is not affected by their center of gravity