📝 [MESL] QB 0519 | Mastery Exam 48 – Elements

The _____ of oscillating motion of an object is the largest displacement from the equilibrium position of that object.

For an ideal situation as the object moves, the displacement from equilibrium will form a trigonometric curve between certain limits. What do you call this motion?

What refers to a force whose direction is towards a fixed point and whose magnitude depends on the distance between the particle and that fixed point?

In an object is traveling in a circle, the component of the resultant force acting on the body towards the center of the circle is called _____.

What force is necessary to maintain motion in a circular path?

What refers to the geometrical center of a surface or body?

When will the center of mass of a body coincides with the centroid of the body?

What refers to a force for which no net work is done as the particle moves along every closed path from a point A to a point B and back to A?

What type of force acts at very point throughout the volume of a body?

Normal reaction and friction are examples of what type of force?

What type of force occurs when two surfaces are in contact?

What refers to a force on an object for which work done by the force as the object between any two points A and B, depends only on the position of A and B and not on the path between A and B?

In connection with oscillation and vibration, what word is used to describe a decaying motion?

What measures the “bouncyness” or elasticity of a collision?

Coefficient of restitution is a measure of the:

When the coefficient of restitution is exactly equal to one, then it is said to be perfect collision. Perfect collision means that _____.

When can we say that an object is in “dynamic equilibrium”?

For a static particle, the force of friction is just sufficient to stop motion. This is known as the law of friction, where F ≤ 𝜇ₛR, where 𝜇ₛ is the coefficient of static friction. Who formulated this equation?

If 𝜇ₛ is the coefficient of static friction and 𝜇ₛ is the coefficient of dynamic friction, which of the following is true?

Who formulated the law of gravitation between two objects?

What property of a body refers to its reluctance to undergo a linear acceleration?

What is the rate of change of displacement which acts along the tangent to the path or trajectory of a particle’s motion?

Which of the following is true about linear momentum?

How much force is required to give an object of mass 1 kg an acceleration 1m/s²?

For Newton’s laws of motion to apply, an object is modeled as a particle moving with speeds:

What type of impact occurs on two bodies if one or both of the bodies has a velocity that is not common to common normal or lines of centers?

What refers to a model for an object with a shape that cannot be deformed, so that the distance between any two points within the body remains constant, no matter what forces are applied?

An object with its mass distributed evenly throughout its volume is called:

When the motion of an object near to the Earth’s surface is opposed by resistive forces (such as air resistance) which depend on the velocity of the object, the force of gravity and the resistive forces can come into balance. The velocity when this occurs is called _____.

What is described as a “pushing force”?

In oscillation, what refers to the time taken for the system to complete one cycle of its motion?

Which of the following is true about the moment of a force?

What is a pair of forces which are equal in magnitude, opposite in direction and do not act through the same point?

The _____ of a machine equals the ration between its actual and its theoretical mechanical advantage.

Actual mechanical advantage is the ration between:

Whenever a net force acts on a body, it produces an acceleration in the direction of the resultant force, an acceleration which is directly proportional to the resultant force and inversely proportional to the mass of the body. This theory is popularly known as:

“For every action, there is always an equal and opposite reaction”. This is known as:

“Everybody continues in its state of rest or at constant speed in a straight line motion, it is compelled to change that state because of forces acting on it”. This is known as:

“An unbalanced force acting on an object will cause the object to accelerate will cause the object to accelerate in the direction of the force”. This is known as:

Newton’s second law of motion states that the rate of change of momentum with respect to time is:

The range of a projectile depends on:

In a trajectory, air resistance decreases:

In the absence of air resistance a projectile sent off at an angle of θ above the horizontal with an initial velocity of V has a horizontal range of:

In the preceding question, the time of flight is:

The trajectory of a projectile is a graph of:

If an object is thrown vertically upward, its acceleration _____.

The acceleration is _____ the resultant force on the object.

The acceleration is _____ the mass of the object.

Refers to the vertical speed at which the force of air resistance is just sufficient to balance the body’s weight.

Objects falling in air from the same height will not reach the ground at the same time because: