Hookes Law, Moments And Newtons Second Law Flashcards
What does Hooke’s Law state?
The force exerted by a spring is directly proportional to the distance it is stretched or compressed.
What is the formula for Hooke’s Law?
F = kx, where F is the force, k is the spring constant, and x is the displacement.
True or False: Hooke’s Law applies only to elastic materials.
True
What is the unit of the spring constant (k)?
N/m (Newtons per meter)
Fill in the blank: The restoring force of a spring acts in the _____ direction of displacement.
opposite
Define ‘moment’ in physics.
A moment is the measure of the tendency of a force to rotate an object about an axis.
What is the formula for calculating the moment (torque)?
Moment = Force × Distance from the pivot point
What is the unit of moment?
N·m (Newton meter)
True or False: The moment is affected by the angle at which the force is applied.
True
In the context of moments, what does the term ‘pivot point’ refer to?
The point about which an object rotates.
What is Newton’s Second Law of Motion?
The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
What is the formula for Newton’s Second Law?
F = ma, where F is the net force, m is the mass, and a is the acceleration.
True or False: According to Newton’s Second Law, if the net force acting on an object is zero, its acceleration is also zero.
True
Fill in the blank: The greater the mass of an object, the _____ the acceleration for a given force.
smaller
What is the relationship between force, mass, and acceleration?
Force is the product of mass and acceleration.
What does it mean for an object to be in equilibrium?
The sum of the forces acting on the object is zero, resulting in no acceleration.
Multiple Choice: Which of the following best describes Hooke’s Law? A) F = ma B) F = kx C) F = mg
B) F = kx
What is the effect of increasing the spring constant (k) on a spring’s behavior?
It makes the spring stiffer, requiring more force to stretch or compress it.
Short Answer: What happens to the moment if the distance from the pivot point is doubled while keeping the force constant?
The moment is doubled.
Fill in the blank: In the case of a balanced beam, the sum of clockwise moments equals the sum of _____ moments.
counterclockwise
True or False: An object can be in motion and still be in equilibrium.
True, if it moves at a constant velocity.
What is the significance of the spring constant in Hooke’s Law?
It quantifies the stiffness of the spring.
Multiple Choice: Which law describes the relationship between force, mass, and acceleration? A) Hooke’s Law B) Newton’s First Law C) Newton’s Second Law
C) Newton’s Second Law
What does the slope of a force vs. displacement graph for a spring represent?
The spring constant (k).
