PHSX 114 - Homework #7

PHSX 114 - Homework #7 - is at an angle of = 35.0 to the...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
PHSX 114 – HOMEWORK #7 Question 1: (2 points) The cable supporting a 2,225-kg elevator has a maximum strength of 2.966E4 N. What maximum upward acceleration can it give the elevator without breaking? Enter scientific notation as 1.23E4. Number Units Question 2: (2 points) Arlene is to walk across a “high wire” strung horizontally between two buildings 8.00 m apart. The sag in the rope when she is at the midpoint is 8.20°. If her mass is 56.0 kg, what is the tension in the rope at this point? Enter scientific notation as 1.23E4. Number Units Question 3: (2 points) A person pushes a 19.5-kg lawn mower at constant speed with a force of 92.5 N directed along the handle, which
Background image of page 1

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

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: is at an angle of = 35.0 to the horizontal. Note : In numerical answers, enter only the magnitude of the number, without a sign. Enter scientific notation as 1.23E4. a. Calculate the horizontal friction force on the mower. [Num] [Units] b. Calculate the normal force exerted vertically upward on the mower by the ground. [Num] [Units] c. What force must the person exert on the lawn mower to accelerate it from rest to 1.20 m/s in 3.10 seconds, assuming the same friction force? [Num] [Units] *HINT: If the positive direction is forward (as is assumed since the force of the person is listed as positive) then the frictional force should be negative....
View Full Document

This note was uploaded on 04/09/2008 for the course PHSX 114 taught by Professor Davis during the Spring '08 term at Kansas.

Page1 / 2

PHSX 114 - Homework #7 - is at an angle of = 35.0 to the...

This preview shows document pages 1 - 2. Sign up to view the full document.

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