📚 Learning Guide
Friction
medium

If a box weighing 50 kg is pushed across a wooden floor with a coefficient of static friction of 0.4, what is the maximum force that can be applied before the box starts to move?

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Learning Path

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Choose AnswerChoose the Best Answer

A

196 N

B

200 N

C

210 N

D

250 N

Understanding the Answer

Let's break down why this is correct

The maximum static friction force is found by multiplying the coefficient (0.4) by the normal force. Other options are incorrect because Choosing 200 N suggests using a rounded weight of 500 N instead of the exact 490 N; Selecting 210 N likely adds 10 N to the correct result, maybe thinking friction equals 0.42 instead of 0.4.

Key Concepts

Coefficient of Friction
Friction and Motion
Topic

Friction

Difficulty

medium level question

Cognitive Level

understand

Deep Dive: Friction

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Definition
Definition

Friction in Physics refers to the force that opposes motion between two surfaces in contact. It plays a crucial role in determining how objects move on surfaces and is influenced by the normal force and the friction coefficient. Understanding friction is essential for analyzing the behavior of objects on horizontal and inclined surfaces.

Topic Definition

Friction in Physics refers to the force that opposes motion between two surfaces in contact. It plays a crucial role in determining how objects move on surfaces and is influenced by the normal force and the friction coefficient. Understanding friction is essential for analyzing the behavior of objects on horizontal and inclined surfaces.

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