Register
A 5kg block slides across a horizontal table surface with a coefficient of friction of 0.21. What is the friction force the block experiences?
429,980 views
23 votes
23 votes
A 5kg block slides across a horizontal table surface with a coefficient of friction of 0.21. What is the friction force the block experiences?

User Thankyoussd
by
2.5k points

1 Answer

7 votes
7 votes

\begin{gathered} m=5\operatorname{kg},g=9.81m/s^2 \\ \mu_k=0.21 \\ Ff=\text{?} \\ Ff=\text{ N}\cdot\mu_k \\ \text{From the fr}ee\text{ body diagram} \\ \uparrow+\Sigma Fy=0 \\ N-mg=0 \\ N=mg \\ \text{Hence} \\ Ff=\text{ N}\cdot\mu_k \\ Ff=\text{ }mg\cdot\mu_k \\ Ff=(5\operatorname{kg})(9.81m/s^2)(0.21) \\ Ff=10.3N \\ \text{The friction force is 10.3N} \end{gathered}

A 5kg block slides across a horizontal table surface with a coefficient of friction-example-1
A 5kg block slides across a horizontal table surface with a coefficient of friction-example-2
User Mihey Mik
by
2.5k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

1.6m questions

2.0m answers

Other Questions

Determjne the density of liquid whose relative density is 1.25 given that the density is 1000kgm-3​
After a light turns green , Lesly accelerates to 120 km/hr over 100 meters . What is her acceleration in m/s^2
If a constant fotce of 490 newtons is applied to an object and it proceeds to accelerate in the opposjte direction at 9.8 meters per second, every second, what is its mass?
How can I solve the following? In (Figure 1), let V = 15.0 V and C1=C2=C3= 24.2 μF. Part A: How much energy is stored in the capacitor network as shown in (Figure 1)? Part B: How much energy would be stored
1. if i start with 48 ml of water in a graduated cylinder, after submerging an object the water level rises to 63 ml, what is the volume of the object. 2. if i start with 36 ml of water in a graduated
Link Copied!