# Physics

Block B in the figure(Figure 1) rests on a surface for which the static and kinetic coefficients of friction are 0.65 and 0.40, respectively. The ropes are massless.What is the maximum mass of block A for which the system is in equilibrium? (Consider the state of the system shown at the figure only. The system is not in equilibrium when the blocks start to move.)
Express your answer to two significant figures and include the appropriate units.

20kg
Block /45 Degrees
B--------/-;---Rope
_______ ' ;
; ' ;
; ' ;Wall
Wall ; A ;
; Block

i would like to link the picture but i cant so i figured i would draw the figure to the best of my ability. the dashes - /and ' leading from B down to A is the rope.Walls are the :

1. 👍
2. 👎
3. 👁
4. ℹ️
5. 🚩
1. Never mind. i figured it out. the diagram didn't even come out right anyways.

Tension(T)=mu_static(μ_s)* mass(m)* gravity(g)

T=.65(20)(9.8)= 127.4 N

T=m(g)
127.4=m(9.8)
m=13 kg for block A

1. 👍
2. 👎
3. ℹ️
4. 🚩
2. 123

1. 👍
2. 👎
3. ℹ️
4. 🚩
3. 123

1. 👍
2. 👎
3. ℹ️
4. 🚩

## Similar Questions

1. ### Physics

A block with mass M rests on a frictionless surface and is connected to a horizontal spring of force constant k, the other end of which is attached to a wall. A second block with mass m rests on top of the first block. The

2. ### physics

A block with mass m = 5.00 kg slides down a surface inclined 36.9∘ to the horizontal (the figure (Figure 1)). The coefficient of kinetic friction is 0.24. A string attached to the block is wrapped around a flywheel on a fixed

3. ### Physics

1. The figure shows a 100-kg block being released from rest from a height of 1.0 m. It then takes 0.53 s for it to reach the floor. What is the mass m of the block on the left? There is no friction or mass in the pulley, and the

4. ### physics

In the Figure the pulley has negligible mass, and both it and the inclined plane are frictionless. Block A has a mass of 1.3 kg, block B has a mass of 2.7 kg, and angle è is 26 °. If the blocks are released from rest with the

1. ### physics

Mass mA rests on a smooth horizontal surface, mB hangs vertically.If m_{\rm{A}}=13.0 kg and m_{\rm{B}}=3.0 kg in the figure , determine the magnitude of the acceleration of each block.

2. ### physics

The 2 kg block in Figure 7-25 slides down a frictionless curved ramp, starting from rest at a height of h = 3 m. The block then slides d = 12 m on a rough horizontal surface before coming to rest. Figure 7-25 (a) What is the speed

3. ### physics

In the apparatus shown in the figure (Figure 1) , m1 = 10kg and the coefficients of static and kinetic friction between m1 and the table are 0.69 and 0.32, respectively. Part A What mass of m2 will just barely set the system in

4. ### Physics

A 5.00-kg block is placed on top of a 10.0-kg block which rests on a horizontal surface. The 5.00-kg block is tied to a wall with a horizontal string. A 45.0-N horizontal force directed away from the wall is then exerted on the

1. ### Physics

A block with mass M = 5.00 kg rests on a frictionless table and is attached by a horizontal spring (k = 130 N/m) to a wall. A second block, of mass m = 1.25 kg rests on top of M. The blocks are displaced by 10 cm then released. If

2. ### physics

The block in the figure below lies on a horizontal frictionless surface and is attached to the free end of the spring, with a spring constant of 65 N/m. Initially, the spring is at its relaxed length and the block is stationary at

3. ### physics

A 3.0kg- block sits on top of a 5.0kg block which is on a horizontal surface. The 5.0-kg block is pulled to the right with a force as shown in the figure . The coefficient of static friction between all surfaces is 0.65 and the

4. ### Physics

A block of mass m = 2.00 kg rests on the left edge of a block of mass M = 8.00 kg. The coefficient of kinetic friction between the two blocks is 0.300, and the surface on which the 8.00- kg block rests is frictionless. A constant