A 20 kg object is thrown vertically upward with a force of 100 N. What is the ne

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Question: A 20 kg object is thrown vertically upward with a force of 100 N. What is the net force acting on the object? (2023)

Options:

Correct Answer: 80 N

Exam Year: 2023

Solution:

Net force = Applied force - Weight = 100 N - (20 kg * 10 m/s²) = 100 N - 200 N = -100 N (downward).

A 20 kg object is thrown vertically upward with a force of 100 N. What is the net force acting on the object? (2023)

A 20 kg object is thrown vertically upward with a force of 100 N. What is the net force acting on the object? (2023)

Step 1: Identify the mass of the object, which is 20 kg.
Step 2: Identify the force applied to the object, which is 100 N (upward).
Step 3: Calculate the weight of the object using the formula: Weight = mass * gravity. Here, gravity is approximately 10 m/s².
Step 4: Calculate the weight: Weight = 20 kg * 10 m/s² = 200 N (downward).
Step 5: Calculate the net force acting on the object using the formula: Net force = Applied force - Weight.
Step 6: Substitute the values: Net force = 100 N - 200 N.
Step 7: Perform the calculation: Net force = -100 N (downward).

Net Force Calculation – Understanding how to calculate the net force acting on an object by considering both the applied force and the weight of the object.
Weight Calculation – Calculating the weight of an object using the formula weight = mass × gravitational acceleration.
Direction of Forces – Recognizing the direction of forces involved, particularly distinguishing between upward applied force and downward gravitational force.