Which of the following best describes what happens to the force of attraction if the distance between two objects is increased?
It increases.
It varies.
It stays the same.
It decreases
It decreases.
Is this correct? If so, please provide an explanation
Yes, that is correct. When the distance between two objects is increased, the force of attraction between them decreases. This is known as the inverse square law of gravitational attraction. According to this law, the force of attraction between two objects is inversely proportional to the square of the distance between their centers. In simple terms, as the distance between two objects increases, the force of attraction between them becomes weaker.
Two students are investigating how balanced and unbalanced forces affect the motion of a small cart with freely rolling wheels. The students want to demonstrate three cases of motion:
• no acceleration
• acceleration to the left
• acceleration to the right
The students use string to attach two spring scales to the cart so that the forces exerted on it can be measured in newtons
(N), as shown in the figure. The cart is then released from rest..
Spring scale
String Cart
Which set of forces will allow the students to demonstrate all three cases of motion?
A: 20 N 15 N 15 N 20 N 10 N 20 N
B: 20 N 20 N 15 N 20 N 10 N 20 N
C: 20 N 20 N 15 N 20 N 10 N 20 N
D: 20 N 20 N 15 N 15 N 10 N 10 N
To demonstrate all three cases of motion (no acceleration, acceleration to the left, and acceleration to the right), the forces applied to the cart should be unbalanced and vary in magnitude and direction.
Option A: 20 N 15 N 15 N 20 N 10 N 20 N
This set of forces is unbalanced and varied in magnitude and direction. It includes forces both to the left (15 N) and to the right (15 N, 20 N, 10 N). Therefore, Option A can be chosen.
Option B and C: 20 N 20 N 15 N 20 N 10 N 20 N
These sets of forces have more balanced forces (20 N, 20 N) than unbalanced forces. They lack the necessary variation in direction to demonstrate motion to the left.
Option D: 20 N 20 N 15 N 15 N 10 N 10 N
This set of forces lacks the necessary unbalanced forces to demonstrate motion to the right (only 10 N), and there is no force in the opposite direction (left) for motion in that direction.
Therefore, the correct option is A: 20 N 15 N 15 N 20 N 10 N 20 N.
Drag and Drop the true statements about balanced and unbalanced forces.
DRAG & DROP THE ANSWER
Forces are equal and opposite.
Forces on one side of the object is greater than the other side.
Box one
Left side: 20N
Right side: 60N
*net force is 0 N
*Net Force is 350 N.
Box 2
Left side: 60
Right side: 60
Unbalanced:
Balanced:
Forces are equal and opposite.
Forces on one side of the object is greater than the other side.
Box one:
Net force is 0 N (Balanced).
Box 2:
Unbalanced.
Balanced.
No you have to put them in the Balanced or Unbalanced categories
Apologies for the confusion. Here are the statements categorized as either Balanced or Unbalanced:
Balanced:
- Forces are equal and opposite.
Unbalanced:
- Forces on one side of the object are greater than the other side.
Box one:
- Left side: 20N
- Right side: 60N
- Categorized as Unbalanced.
Box 2:
- Left side: 60N
- Right side: 60N
- Categorized as Balanced.
In a game of tug of war, team one pulls to the right with a force of 500 newtons and team two pulls to the left with a force of 600 newtons.
What is the net force? Click the best answer and drag it into the white box.
DRAG & DROP THE ANSWER
100 N to the right
1100 N to the left
100 N to the left
0 N; balanced