Serway_CP_poll_ch08

Serway_CP_poll_ch08 - A woman who weighs 500 N is standing...

Info iconThis preview shows pages 1–12. Sign up to view the full content.

View Full Document Right Arrow Icon
A woman who weighs 500 N is standing on a board that weighs at the right end is 3 times bigger than the support force at the left end. If the board is 8 m long, how far from the right end is the woman standing? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 4.0 m 2. 2.0 m 3. 2.7 m 4. 1.6 m
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
in 6 s. The wheels have a diameter of 0.4 m. What is the angular acceleration of each wheel? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 5 rad/s 2 2. 15 rad/s 2 3. 25 rad/s 2 4. 35 rad/s 2
Background image of page 2
(I cylinder = 1/2 MR 3 ). If the bus requires an average power of 10 kilowatts, how long will the flywheel rotate? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 308 s 2. 617 s 3. 925 s 4. 1234 s
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
and supported by vertical ropes at each end. How far would the worker stand from one of the supporting ropes to produce a tension of 550 N in that rope? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 1.4 m 2. 2.0 m 3. 2.5 m 4. 2.7 m
Background image of page 4
is resting against a smooth, frictionless wall. If the ladder is 20 kg and it makes an angle of 60° with the ground, find the force of friction of the ground on the foot of the ladder. 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 784 N 2. 196 N 3. 50 N 4. 138 N
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
and floor is 0.40, what is the maximum angle that the ladder can make with the floor before it slips? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 22° 2. 51° 3. 18° 4. 42°
Background image of page 6
and 80 cm marks, respectively. Where should a third mass of 0.30 kg be hung to keep the stick balanced? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 20 cm 2. 70 cm 3. 30 cm 4. 25 cm
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
An 800 N billboard worker stands on a 4 m scaffold weighs 500 N and the worker stands 1 m from one end, what is the tension in the rope nearest the worker? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 450 N 2. 500 N 3. 800 N 4. 850 N
Background image of page 8
A 20 kg child wants to use a 10 kg board that is 4.0 m long as a herself by putting the support at the center of gravity when she sits on one end of the board. How far from her will the support point be? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 2.0 m 2. 1.0 m 3. 0.67 m 4. 0.33 m
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
circling the ship with an angular velocity of 0.1 rad/s. How far can she be pulled in before the centripetal acceleration reaches 5g = 49 m/s 2 ? 1 2 3 4 25% 25% 25% 25% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 1. 10.1 m 2. 50.0 m 3. 72.7 m 4. 89.9 m
Background image of page 10
a force of 300 N directed perpendicular to the plane of the door and 0.8 m from the hinges. What is the torque due to this force about an axis through the hinges?
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 12
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 01/19/2010 for the course PHYS 200 taught by Professor Davies during the Spring '08 term at Roger Williams.

Page1 / 60

Serway_CP_poll_ch08 - A woman who weighs 500 N is standing...

This preview shows document pages 1 - 12. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online