Question

conceptual physics
the balance of forces and types of forces
name: carrie shalim date: 9/16 period: cp3
use phet simulation platform to answer the following questions.

1. a force of magnitude 50n is applied on an object towards the left side at the same time as a force of magnitude 100n towards the right hand side, what is the magnitude and direction of the resultant force?
2. a force of magnitude 200n is applied on an object towards the left side at the same time as a force of magnitude 100n towards the right hand side, what is the magnitude and direction of the resultant force?
3. a force of magnitude 50n is applied on an object towards the left side at the same time as a force of magnitude 100n towards the right hand side, what is the magnitude and direction of the resultant force?
4. a force of magnitude 50n is applied on an object towards the left side at the same time as a force of magnitude 100n towards the right hand side, what is the magnitude and direction of the resultant force?
5. a force of magnitude 50n is applied on an object towards the left side at the same time as a force of magnitude 200n towards the right hand side, what is the magnitude and direction of the resultant force?
6. what is gravitational force?
7. describe how gravitational force acts between two objects.
8. explain how gravitational force affects objects on earth compared to objects in space.

Explanation:

Step1: Define force direction convention

Let right - hand side force be positive and left - hand side force be negative.

Step2: Calculate resultant force for question 1

The two forces are $F_1 = 50N$ (left) and $F_2=100N$ (right). The resultant force $F = F_2+F_1=100 - 50=50N$. The direction is towards the right.

Step3: Calculate resultant force for question 2

The two forces are $F_1 = 200N$ (left) and $F_2 = 100N$ (right). The resultant force $F=F_2 + F_1=100-200=- 100N$. The direction is towards the left.

Step4: Calculate resultant force for question 3

The two forces are $F_1 = 50N$ (left) and $F_2 = 100N$ (right). The resultant force $F=F_2+F_1=100 - 50 = 50N$. The direction is towards the right.

Step5: Calculate resultant force for question 4

Same as question 3, $F_1 = 50N$ (left) and $F_2 = 100N$ (right), $F=F_2+F_1=100 - 50=50N$. The direction is towards the right.

Step6: Calculate resultant force for question 5

The two forces are $F_1 = 50N$ (left) and $F_2 = 200N$ (right). The resultant force $F=F_2+F_1=200 - 50 = 150N$. The direction is towards the right.

Step7: Answer question 6

Gravitational force is the force of attraction between two masses. It is given by the formula $F = G\frac{m_1m_2}{r^2}$, where $G$ is the gravitational constant, $m_1$ and $m_2$ are the masses of the two objects, and $r$ is the distance between their centers of mass.

Step8: Answer question 7

Gravitational force acts along the line joining the centers of the two objects. It is an attractive force, so it pulls the two objects towards each other. The magnitude of the force is proportional to the product of their masses and inversely proportional to the square of the distance between them.

Step9: Answer question 8

On Earth, gravitational force is relatively strong due to the Earth's large mass. It causes objects to have weight and fall towards the Earth's surface. In space, away from large masses like planets, gravitational force is much weaker. Objects are in a state of free - fall or weightlessness, and they move in straight lines or orbits depending on their initial velocities and the gravitational influence of nearby masses.

Answer:

1. Magnitude: 50N, Direction: towards the right
2. Magnitude: 100N, Direction: towards the left
3. Magnitude: 50N, Direction: towards the right
4. Magnitude: 50N, Direction: towards the right
5. Magnitude: 150N, Direction: towards the right
6. Gravitational force is the force of attraction between two masses, given by $F = G\frac{m_1m_2}{r^2}$.
7. Gravitational force acts along the line joining the centers of two objects, is attractive, and its magnitude is proportional to the product of their masses and inversely proportional to the square of the distance between them.
8. On Earth, gravitational force is strong, causing objects to have weight and fall. In space, it is much weaker, resulting in free - fall or weightlessness.