Hw #6

Download Document
Showing pages : 1 - 3 of 4
This preview has blurred sections. Sign up to view the full version! View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: homework 06 FONTENOT, BRIAN Due: Feb 25 2008, 4:00 am 1 Question 1, chap 7, sect 1. part 1 of 3 10 points Assume you are on a planet similar to Earth where the acceleration of gravity g 10 m / s 2 . A plane 50 m in length is inclined at an angle of 16 . 3 as shown. A block of weight 500 N is placed at the top of the plane and allowed to slide down. 5 N = . 5 v 5 m 16 . 3 48 m 14m The mass of the block is most nearly 1. m 25 kg 2. m 26 kg 3. m 39 kg 4. m 10 kg 5. m 52 kg 6. m 15 kg 7. m 20 kg 8. m 13 kg 9. m 50 kg Question 2, chap 7, sect 1. part 2 of 3 10 points Calculate the magnitude of the normal force exerted on the block by the plane. 1. bardbl vector N bardbl 240 N 2. bardbl vector N bardbl 160 N 3. bardbl vector N bardbl 360 N 4. bardbl vector N bardbl 480 N 5. bardbl vector N bardbl 200 N 6. bardbl vector N bardbl 400 N 7. bardbl vector N bardbl 120 N 8. bardbl vector N bardbl 80 N Question 3, chap 7, sect 1. part 3 of 3 10 points Calculate the work done on the block by the gravitational force during the 50 m slide down the plane in J. 1. W 1750 J 2. W 3690 J 3. W 7000 J 4. W 10400 J 5. W 1350 J 6. W 650 J 7. W 3750 J 8. W 5850 J 9. W 2400 J Question 4, chap 7, sect 1. part 1 of 3 10 points Sally applies a horizontal force of 706 N with a rope to drag a wooden crate across a floor with a constant speed. The rope tied to the crate is pulled at an angle of 42 relative to the floor. The acceleration of gravity is 9 . 8 m / s 2 . homework 06 FONTENOT, BRIAN Due: Feb 25 2008, 4:00 am 2 m F 706 N 4 2 How much force is exerted by the rope on the crate?...
View Full Document