Dynamics A Level Force Questions

In summary, when two bodies, P and Q, are exerting forces on each other and have no other forces acting on them, the magnitude of force on Q is equal to the magnitude of acceleration of Q. This is based on Newton's third law and the equation F=ma. The correct answer is C.
  • #1
raamishstuden
3
0

Homework Statement


Two bodies P and Q having masses Mp and Mq respectively exert forces on each other and have no other forces acting on them. The force acting on P is F which gives P an acceleration a.Which of the following pairs is correct?

Magnitude of force on Q Magnitude of acceleration of Q

A. Mq/Mp*F a
B. Mp/Mq*F a
C. F a
D. F Mp/Mq*a
E. F Mq/Mp*a

Homework Equations


F=ma


The Attempt at a Solution



Magnitude of Force on Q: F because of Newton's third law
Magnitude of acceleration: a
 
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  • #2
Can you explain your reasoning for choosing that answer? Otherwise, for all we know, you just guessed, which doesn't exactly qualify for attempting to solve the problem yourself.
 

FAQ: Dynamics A Level Force Questions

1. What is force?

Force is a physical quantity that is used to describe the interaction between objects. It is a vector quantity, meaning it has both magnitude and direction. In simpler terms, force is a push or pull that can cause an object to accelerate, change direction, or deform.

2. What is Newton's Second Law of Motion?

Newton's Second Law of Motion states that the acceleration of an object is directly proportional to the net force acting on the object and inversely proportional to its mass. This means that the greater the force applied to an object, the greater its acceleration will be, and the more massive the object, the less it will accelerate.

3. How do you calculate force?

Force can be calculated using the formula F=ma, where F is the force in Newtons (N), m is the mass in kilograms (kg), and a is the acceleration in meters per second squared (m/s2). This formula is derived from Newton's Second Law of Motion.

4. How do forces affect motion?

Forces can affect motion in several ways. A force can cause an object to accelerate, meaning its speed and/or direction changes. A force can also cause an object to decelerate, meaning its speed decreases. Additionally, forces can cause objects to change direction or deform.

5. What is the difference between contact and non-contact forces?

Contact forces are those that act on an object through direct physical contact, such as pushing or pulling. Non-contact forces, on the other hand, act on an object without any physical contact, such as gravity or magnetism. Contact forces are usually stronger than non-contact forces.

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