What is a free body diagram?
(Points : 1)
a drawing of an object in free fall
a diagram showing all the forces acting on an object but not its surroundings <--
a diagram showing the shape of an object and the forces that act on it
a diagram of an object that is free to roll
Question 2. 2. Which of these would you include in a free body diagram of a coin balanced on its edge on a table?
(Points : 1)
the table
the force of gravity acting on the coin <--
the forces that would knock the coin over if it were not balanced
the room, to depict the physical setting
Question 3. 3. Which of these would you include in a free body diagram for a bicycle-plus-rider taken together as the bicycle is being pedaled up a hill?
(Points : 1)
the force that the bicycle tire exerts backward on the road
the reaction force that the road exerts on the bicycle <--
the force that the bicyclist exerts on the handlebars
the force that the bicycle pedal exerts on the bicycle chain
Question 5. 5. A balloon filled with helium experiences a buoyant force upward because the helium is less dense than the air around it. Suppose a balloon with a bolt tied to it by a string is floating at a height of 200 m without changing elevation. The weight of the string and bolt is 1.0 N. What is the buoyant force acting on the balloon?
(Points : 1)
0.0 N
1.0 N <--
9.8 N
200 N
Question 6. 6. A 2.1 kg wagon is being pulled by a rope that exerts a horizontal force of 4.0 N and, at that moment, is accelerating at 1.1 m/s2 on level ground. Remember that g = 9.8 m/s2. What is the normal force on the wagon?
(Points : 1)
0 N
2.3 N <--
21 N
9.8 N
Question 7. 7. In the year 2081 in a shipping port on the moon, workers for Ore-Space, Inc., hoist a 500.0 kg hunk of anorthosite moon rock by a chain. (Neglect the weight of the chain.) The block is initially accelerating at 4.0 m/s. How much force is being exerted by the chain? The force of gravity on the moon is one-sixth that of earth.
(Points : 1)
2,000 N <--
2,800 N
490 N
2,200 N
All right besides
Question 6) 21 N
Question 7) 2,800 N
Question 1: A free body diagram is a diagram showing all the forces acting on an object but not its surroundings. It's like a celebrity selfie, focusing on the object and blocking out the paparazzi.
Question 2: In a free body diagram of a coin balanced on its edge on a table, you would include the force of gravity acting on the coin. Gravity's like the ultimate party crasher, always trying to bring things down.
Question 3: In a free body diagram for a bicycle-plus-rider pedaling up a hill, you would include the reaction force that the road exerts on the bicycle. It's like the road giving the bike a little pep talk, saying "You can do it, buddy!"
Question 5: The buoyant force acting on the balloon is 1.0 N. It's like the balloon getting a gentle lift from a friendly neighborhood air pocket.
Question 6: The normal force on the wagon is 2.3 N. It's like the ground giving the wagon a supportive high five.
Question 7: The force being exerted by the chain is 2,000 N. It's like the chain channeling its inner superhero strength to hoist that moon rock like a boss.
Question 1:
A free body diagram is a diagram showing all the forces acting on an object but not its surroundings.
Question 2:
In a free body diagram of a coin balanced on its edge on a table, you would include the force of gravity acting on the coin.
Question 3:
In a free body diagram for a bicycle-plus-rider taken together as the bicycle is being pedaled up a hill, you would include the reaction force that the road exerts on the bicycle.
Question 5:
The buoyant force acting on the balloon is 1.0 N.
Question 6:
The normal force on the wagon is 2.3 N.
Question 7:
The force being exerted by the chain is 2,000 N.
Question 1: A free body diagram is a diagram showing all the forces acting on an object but not its surroundings. It is used to analyze and understand the forces acting on an object.
Question 2: In a free body diagram of a coin balanced on its edge on a table, you would include the force of gravity acting on the coin. This is because gravity is always acting on the coin, even when it is in balance.
Question 3: In a free body diagram for a bicycle-plus-rider taken together as the bicycle is being pedaled up a hill, you would include the reaction force that the road exerts on the bicycle. This is because the road provides the necessary support and pushes the bicycle forward.
Question 5: The buoyant force acting on the balloon is 1.0 N. This is because the buoyant force is equal to the weight of the displaced fluid, in this case, air. The buoyant force acts in the opposite direction to gravity and keeps the balloon floating.
Question 6: The normal force on the wagon is 2.3 N. The normal force is the force exerted by a surface to support the weight of an object resting on it. In this case, it is equal to the weight of the wagon, which is given by the equation W = m * g, where m is the mass of the wagon and g is the acceleration due to gravity.
Question 7: The force being exerted by the chain is 2,000 N. This is because the force of gravity on the moon is one-sixth that of earth, so the weight of the hunk of moon rock is 500.0 kg * (9.8 m/s^2 / 6) = 814.3 N. Since the block is initially accelerating at 4.0 m/s^2, the net force acting on it is given by the equation F = m * a, where m is the mass of the block and a is the acceleration. Therefore, F = 500.0 kg * 4.0 m/s^2 = 2,000 N.