# 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 between the block and the incline is μ = 0.41. The incline plane makes an angle θ = 27.7 ° with the horizontal.

a) What is in m/s2 the acceleration of the block down the ramp?

b) What is in m/s the speed of the block at the bottom of the ramp?

The block continues to slide on the ground with the same coefficient of friction.

c) What is in m/s2 the acceleration of the block on the ground?

d) how far will the block slide on the ground until coming to rest?

1. 👍 0
2. 👎 0
3. 👁 65
1. M*g = 2.2 * 9.8 = 21.56 N. = Wt. of block.

Fp = 21.56*sin27.7 = 10.02 N. = Force
parallel to incline.

Fn = 21.56*Cos27.7 = 19.09 N. = Normal
force.

Fk = u*Fn = 0.41 * 19.09 = 7.83 N. = Force of kinetic friction.

a. a = (Fp-Fk)/M = (10.02-7.83)/2.2 = 0.995 m/s^2

b. L = h/sin27.7 = 3.6/sin27.7 = 7.74 m.
= Length of ramp.

V^2 = Vo^2 + 2a*L = 0 + 1.99*7.74 = 15.4
V = 3.92 m/s.

1. 👍 0
2. 👎 0
posted by Henry

## Similar Questions

1. ### Imaginary Number i

I'm have a few questions about i: -How come sometimes you solve to get rid of it, other times you leave the it? For example, 4(-2+3i) becomes -8+12i, while other times (3+2i)(3-2i) yields 13 (the i is turned into negative one).

asked by Rosalie on November 30, 2009
2. ### math

the sum of a number and 3 times that number is 76. what is that number? PLEASE HELP ME I DON'T GET IT!!!!!!!! Mathematics is a language, so translate the English into "math" let the number be x "the sum of a number and 3 times

asked by Rebekka on April 18, 2007
3. ### properties of operations

why don't i have to do any computing to solve 15 times 0 times (13+7)

asked by Anonymous on September 20, 2011
4. ### math question

/how do i solve this? The probability of winning a game is 15%. If you play 20 times,how many times should you expect to win? A.5 times B.3 times C.6 times D.15 times

asked by matt on June 5, 2014

Check my answers please!!!! I really don't know how to do these but I tried my best 1. Simplify. 3x^2+ 5x-5x^2-4x+5-2 A.-8x^2-9x+3 B.2x^2+x+3 C.-2x^2-9x+3*** D.-2x^2+x+3 2. Add or Subtract.(8x – 2y) + (3x – 4y) A.11x+8y B.4x-y

asked by Jazmin G. on April 26, 2016
6. ### algerbra

how do i set up and whats the prosedure to solve 10 to the 7th power times 10 to the third power divided by 10 to the 4th power times ten to the negitive 9the power? please help you are doing mankind a favor.if i don't pass this i

asked by andytrfmn on February 20, 2008
7. ### Geometry

The m

asked by Anna on December 15, 2010
8. ### Math

Write "3 times the sum of x and 5 is 90" as an equation. You don't have to solve. Thank you in advance!

asked by Jeffery on January 18, 2018
9. ### Math- Need Help..

I'm having trouble with a question from one of my math assignments and it's driving me crazy. Its: -2/5x - 9 < 9/10 (two-fifths and nine-tenths) I tried doing it a few times, it might be easier than it looks and I just don't

asked by --- on November 3, 2017
10. ### Math

HOW WOULD I SOLVE SOMETHING LIKE THIS, IT IS AN EXAMPLE I MADE UP. ITS SIMILAR TO THE ONE I HAVE. I DON'T GET IT. THERE ARE TWO UNKNOW VARILABLES AND SOME NUMBERS. HOW DO I POSSIBLE SOLVE THIS. MAYBE I DON'T HAVE TO SOLVE ANYTHING

asked by Sammy on February 2, 2007
11. ### Prealgebra

Please help me to solve this word problem. How do I write and equation and solve? Find three consecutive even integers such that 50 times the smallest is 88 less than 46 times the largest

asked by Mikey on February 8, 2018

More Similar Questions