Respuesta :
What is the direction of the frictional force?
Answer:
Direction of friction is always opposite to relative motion
Explanation:
Friction always resist the relative motion of two surface so it is always opposite to the direction of relative velocity
What is the direction of the normal force?
Answer:
It is perpendicular to the contact plane
Explanation:
Normal force is the perpendicular force which is always at 90 degree with the contact surface
How does the frictional force depend on the normal force?
Answer:
[tex]F_f = \mu F_n[/tex]
Explanation:
Friction force is directly proportional to the normal force so we can say it is given as
[tex]F_f = \mu F_n[/tex]
Let the x-axis be parallel to the incline and the y-axis rise from the incline at a right angle. By Newton's second law, if there is no acceleration in the y-direction (perpendicular to the plane), what must be the magnitude of the normal force?
Answer:
[tex]F_n = mg cos\theta[/tex]
Explanation:
Normal force is equal to the component of the weight opposite to the direction of normal force
[tex]F_n = mg cos\theta[/tex]
Use Newton's second law and the x-components of the forces to find the acceleration. m/s2
Answer:
[tex]a = gsin\theta[/tex]
Explanation:
As we know that
[tex]F_{net} = ma[/tex]
[tex]mg sin\theta = ma[/tex]
[tex]a = gsin\theta[/tex]
