# Physics

posted by .

A 5.0 kg wooden block is placed on an adjustable inclined plane. (For this problem, μs is approximately 0.55 and μk is approximately 0.25)
a) What is the angle of incline above which the block will start to slide down the plane?
b) At what angle of incline will the block then slide down the plane at a constant speed?

• Physics -

a) M g sin A = M g cos A*ìs
tan A = ìs
A = 28.8 degrees

b) M g sin A = M g cosA * ìk
tan A = ìk
A = 14.0 degrees

• Physics -

Thanks

## Similar Questions

1. ### Physics

Sorry I am completly lost on this one and it is my last homework problem. Due in a couple of hours if someone could help. I would greatly appreciate it. A block is placed on an inclined plane. The acceleration of gravity is 9.8 m/s^2. …
2. ### physics

A block of mass m is initially at rest at the top of an inclined plane with a height = 4.4 m which makes and angle of θ = 17 degrees with respect to the horizontal. It is observed to be traveling at v = 0.2 m/s a distance d after …
3. ### physics

An block of mass m , starting from rest, slides down an inclined plane of length L and angle θ with respect to the horizontal. The coefficient of kinetic friction between the block and the inclined surface is μ1 . At the …
4. ### physics

An block of mass m , starting from rest, slides down an inclined plane of length L and angle θ with respect to the horizontal. The coefficient of kinetic friction between the block and the inclined surface is μ1 . At the …
5. ### physics

A block accelerates at 3.3 m/s2 down a plane inclined at an angle 27.0. m μk 3.3 m/s2 27 Find μk between the block and the in- clined plane. The acceleration of gravity is 9.81 m/s2 .
6. ### Physics

Spring on Incline The block in the figure is initially at rest on an inclined plane at the equilibrium position that it would have if there were no friction between the block and the plane. How much work is required to move the block …
7. ### Physics

A wooden block of mass m = 2.3 kg starts from rest on an inclined plane sloped at an angle 26 degrees from the horizontal. The block is originally located 1.9 m from the bottom of the plane. Assume the inclined plane is friction less. …
8. ### Physics

Can someone help me solve this one? I've tried it a few times, but I don't think I'm getting it right. A block of mass M = 2.2 kg starts from rest at a height of 3.6 m on a fixed inclined plane. The coefficient of kinetic friction
9. ### Circular Motion Physics

A coin with mass 3.1 grams is at rest atop a wooden block of mass 20 grams. The block is on a spinning platform with a 12 centimeter radius. The coefficients of friction between the platform and the wooden block are μs = 0.75 …
10. ### physics

2. A wooden block slides directly down an inclined plane, at a constant velocity of 6 m/s. a. How large is the coefficient of kinetic friction if the plane makes an angle of 25º with the horizontal?

More Similar Questions