A 10 kg block is sliding on a surface with a coefficient of kinetic friction of

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Question: A 10 kg block is sliding on a surface with a coefficient of kinetic friction of 0.3. What is the frictional force acting on the block?

Options:

30 N
15 N
3 N
0 N

Correct Answer: 30 N

Solution:

The frictional force can be calculated using F_friction = μ * N, where N = mg = 10 kg * 9.81 m/s² = 98.1 N. Thus, F_friction = 0.3 * 98.1 N = 29.43 N, approximately 30 N.

A 10 kg block is sliding on a surface with a coefficient of kinetic friction of

Practice Questions

A 10 kg block is sliding on a surface with a coefficient of kinetic friction of 0.3. What is the frictional force acting on the block?

30 N
15 N
3 N
0 N

Questions & Step-by-Step Solutions

A 10 kg block is sliding on a surface with a coefficient of kinetic friction of 0.3. What is the frictional force acting on the block?

Step 1: Identify the mass of the block, which is 10 kg.
Step 2: Calculate the weight of the block using the formula N = mg, where g is the acceleration due to gravity (approximately 9.81 m/s²). So, N = 10 kg * 9.81 m/s².
Step 3: Calculate the normal force (N). This gives us N = 98.1 N.
Step 4: Identify the coefficient of kinetic friction (μ), which is 0.3.
Step 5: Use the formula for frictional force: F_friction = μ * N.
Step 6: Substitute the values into the formula: F_friction = 0.3 * 98.1 N.
Step 7: Calculate the frictional force, which is approximately 29.43 N, or rounded to about 30 N.

Frictional Force Calculation – The question tests the ability to calculate the frictional force using the coefficient of kinetic friction and the normal force.
Normal Force – Understanding how to calculate the normal force (N) as the product of mass (m) and gravitational acceleration (g).

A 10 kg block is sliding on a surface with a coefficient of kinetic friction of

What’s inside this PDF?

A 10 kg block is sliding on a surface with a coefficient of kinetic friction of

Practice Questions

Questions & Step-by-Step Solutions

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