Newton's Laws and Force Diagrams

Practice Questions

AP Physics C Electricity & Magnetism › Newton's Laws and Force Diagrams

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1

A 1000kg rocket has an engine capable of producing a force of 30000N. By the third law of motion, when the rocket launches it experiences a reaction force that pushes it upwards of equal magnitude to the force produced by the engine. What is the acceleration of the rocket?

Rocket2

2

A 1000kg rocket has an engine capable of producing a force of 30000N. By the third law of motion, when the rocket launches it experiences a reaction force that pushes it upwards of equal magnitude to the force produced by the engine. What is the acceleration of the rocket?

Rocket2

3

Box

A box is being pushed against a wall by a force as shown in the picture. If the coefficient of static friction between the box and the wall is , which of the following expressions represents what the force must be for the box not to fall?

4

Box

A box is being pushed against a wall by a force as shown in the picture. If the coefficient of static friction between the box and the wall is , which of the following expressions represents what the force must be for the box not to fall?

5

A paint bucket hangs from the right end of a meter stick, oriented horizontally. The left end of the meter stick rests on a fulcrum so that it may rotate about that point. A rope is to be attached from the left end, so that the system does not rotate. What is the minimum force this rope must support, assuming the meter stick is massless?

6

A paint bucket hangs from the right end of a meter stick, oriented horizontally. The left end of the meter stick rests on a fulcrum so that it may rotate about that point. A rope is to be attached from the left end, so that the system does not rotate. What is the minimum force this rope must support, assuming the meter stick is massless?

7

Box3

A box of mass 10kg is pulled by a force as shown in the diagram. The surface is frictionless. How much force is the box experiencing along the horizontal axis?

8

Box3

A box of mass 10kg is pulled by a force as shown in the diagram. The surface is frictionless. How much force is the box experiencing along the horizontal axis?

9

3masses

Three boxes tied by two ropes move across a frictionless surface pulled by a force as shown in the diagram. Which of the following is an expression of the acceleration of the system?

10

3masses

Three boxes tied by two ropes move across a frictionless surface pulled by a force as shown in the diagram. Which of the following is an expression of the acceleration of the system?

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