Two blocks are connected by a string that goes over an ideal pulley and pulls on block A parallel to the surface of the plane. Block A has a mass of 3.00 kg and can slide along a rough plane inclined at 30 degrees to the horizontal. The coefficient of static friction between block A and the plane is 0.400. What mass should block B have in order to start block A slidig up the plane?

Question
Asked Oct 21, 2019
81 views

Two blocks are connected by a string that goes over an ideal pulley and pulls on block A parallel to the surface of the plane. Block A has a mass of 3.00 kg and can slide along a rough plane inclined at 30 degrees to the horizontal. The coefficient of static friction between block A and the plane is 0.400. What mass should block B have in order to start block A slidig up the plane?

check_circle

Expert Answer

Step 1

Given,

m 3 Kg
0 = 30°
= 0.4
help_outline

Image Transcriptionclose

m 3 Kg 0 = 30° = 0.4

fullscreen
Step 2

Forces acting on the system are shown in FBD,

a
Ука.
а
mg sin
В
ө
mg cos
mg
help_outline

Image Transcriptionclose

a Ука. а mg sin В ө mg cos mg

fullscreen
Step 3

Calculating the forces acting on A b...

net
T-mg sin0- f = ma
N mg cos
f = μN μmg cos θ
(i)
T-mg sin 0 -umgcos e =ma
help_outline

Image Transcriptionclose

net T-mg sin0- f = ma N mg cos f = μN μmg cos θ (i) T-mg sin 0 -umgcos e =ma

fullscreen

Want to see the full answer?

See Solution

Check out a sample Q&A here.

Want to see this answer and more?

Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*

See Solution
*Response times may vary by subject and question.
Tagged in

Science

Physics

Newtons Laws of Motion

Related Physics Q&A

Find answers to questions asked by student like you

Show more Q&A add