1. Read each description below. Choose the force diagram (free-body diagram) that best represents the description. The forces are acting on the object in red type. You may neglect the effects of air resistance. A. Mindy's Christmas tree ornament hangs motionless on a tree.
B. Corey's Christmas tree ornament is falling to the floor.
C. A ball thrown by Ginger is moving upward through the air.
D. A ball dropped by Melissa is falling downward toward the floor.
E. Matt's book is motionless on a table.
F. A ball that was thrown upward by Yvonne is at the top of its path.
For each statement, please choose a diagram representing the force on the object. (Diagrams are in the attachment)
Answers
B. Corey's Christmas tree ornament is falling to the floor. --- Diagram A
C. A ball thrown by Ginger is moving upward through the air. --- Diagram B
D. A ball dropped by Melissa is falling downward toward the floor. --- Diagram A
E. Matt's book is motionless on a table. --- Diagram C
F. A ball that was thrown upward by Yvonne is at the top of its path --- Diagram A.
Final answer:
Free-body diagrams are tools to visualize external forces on an object, drawn as a point. Each scenario given (hanging ornament, falling ornament, moving and dropped balls, book on a table, and ball at top of its path) will have a unique diagram with forces like gravity, tension, and normal force labeled as vectors, and x/y components shown if necessary.
Explanation:
In physics, a free-body diagram is a graphical representation used to visualize the forces acting on an object. To correctly create a free-body diagram, follow these steps:
- Draw the object as a point, especially when considering it as a particle.
- Label all the external forces acting on the object with vector arrows.
- Resolve each force into its x and y components if necessary for analysis.
- Create separate diagrams for each object if multiple objects are involved.
Each scenario provided in the question will have a different free-body diagram:
- Mindy's Christmas tree ornament: It's stationary, with two forces in balance: gravitational force (weight) pulling down and the tension in the string pulling up.
- Corey's Christmas tree ornament: Only one force, gravitational force, is acting on it as it falls.
- Ginger's ball moving upward: Two forces here - gravitational force pulling down and the initial upward force while it moves up.
- Melissa's dropped ball: Similar to B, only gravitational force acts on it.
- Matt's book on a table: Gravitational force pulls it down while the normal force from the table supports it from below.
- Yvonne's ball at the top of its path: Though motionless at this instant, the only force acting on it is gravity.
Note, while drawing a free-body diagram, do not include net forces or internal forces.
Related Questions
Imagine that a tank is filled with water. The height of the liquid column is 7 meters and the area is 1.5square meters (m2 ). What's the force of gravity acting on the column of water? A. 73,500 N B. 102,900 N C. 68,600 N D. 110,700 N
explain why the motion of a body which is moving with constant speed in a circular path is said to be accelerated ?
A common source of 'potential difference' or 'voltage' is a cell or battery. Explain
Why is a 5 rupees coin attracted by a magnet? name the metal present in the coin
magnitude, only
neither magnitude nor direction
direction, only
both magnitude and direction
Answers
Answer:
both magnitude and direction
Explanation:
The worker's pull on the handle of the cart is best described as the force having both magnitude and direction.
- This is a vector quantity
- The force is channeled to move the cart in a specific direction.
- Also, the pull on the cart can be quantified, and so it have magnitude.
- Most physical properties either have magnitude or direction or both.
In this case, the worker is pulling the cart towards a specified direction.
Therefore, the fitting choice is both magnitude and direction.
Final answer:
The pull on a cart's handle by a worker is a force, which in physics, has both magnitude and direction. The magnitude is how hard the pull is and the direction is where the pull is heading to.
Explanation:
In physics, the worker’s pull on the handle of the cart can best be described as a force having both magnitude and direction. Force is a vector quantity, meaning it has both magnitude (the strength of the force) and direction. For instance, when pulling a cart, the force magnitude would relate to how hard you are pulling, while the direction would be the way you are pulling towards. Without both components, the force cannot be fully described or accurately calculated.
Learn more about Physics Force here:
#SPJ3
Answers
Answer:
The correct answer is option B, Mental Health
Explanation:
Mental health is referred to as mental illness when a person is bounded by prolonged negative thoughts. The ongoing signs and symptoms of a poor mental health can cause frequent stress and reduced ability to function. Some common symptoms of mental illness include
• Excessive anger, hostility or violence
• Extreme mood changes
• Confused thinking or reduced ability to concentrate
• Excessive fears or worries
Answers
Answer:
The resistance of the tungsten coil at 80 degrees Celsius is 15.12 ohm
Explanation:
The given parameters are;
The resistance of the tungsten coil at 15 degrees Celsius = 12 ohm
The temperature coefficient of resistance of tungsten = 0.004/°C
The resistance of the tungsten coil at 80 degrees Celsius is found using the following relation;
R₂ = R₁·[1 + α·(t₂ - t₁)]
Where;
R₁ = The resistance at the initial temperature = 12 ohm
R₂ = The resistance of tungsten at the final temperature
t₁ = The initial temperature = 15 degrees Celsius
t₂ = The final temperature = 80 degrees Celsius
α = temperature coefficient of resistance of tungsten = 0.004/°C
Therefore, we have;
R₂ = 12×[1 + 0.004×(80 - 15)] = 15.12 ohm
The resistance of the tungsten coil at 80 degrees Celsius = 15.12 ohm.
b. point D
c. point B
d. point C
Answers
Write the vector velocity of the
passenger relative to the water.
Express your answer using two significant figures. Express
your answer in terms of the
unit vectors i
and j.
Answers
The two speeds could be expressed as vectors. The speed of the boat is merely