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1) We left off with the car example in lecture when our cardm=2000kg) had a speed of =24m/s)and the engine force=70N and wind resistance= -70N) Now lets see what happens if we decrease the engine force to. 50N, as seen below. Sun TOy V; = . 24 =5ON cos a) Is the car speeding up or slowing down? slowins dasn b) Find the distance the car will move as it comes to rest.

1) We left off with the car example in lecture when our cardm=2000kg) had a speed of =24m/s)and the engine force=70N and wind resistance= -70N) Now lets see what happens if we decrease the engine force to. 50N, as seen below. Sun TOy V; = . 24 =5ON cos a) Is the car speeding up or slowing down? slowins dasn b) Find the distance the car will move as it comes to rest.

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Please help! And show the work...I am completely lost. I have attached the questions in pictures below
Work and Simple machines 1) We left off with the car example in lecture when our cardm=2000kg),had a speed of V= 24m/s and the engine force=70N)and wind resistance= -70N) Now lets see what happens if we decrease the engine force to. 50N, as seen below. V = . 24% V= 0% =5ON a) Is the car speeding up or slowing down? 3lowing dasn b) Find the distance the car will move as it comes to rest. 2) The block of ice weighs 500N (ignore friction) 6m 3m a) How much upward force must a person apply to lift the block of ice straight up at constant speed? b) How much work would the person do to lift the ice, straight up, to a height of 3m? c) How much work would be done sliding the block of ice up the incline? 25ON d) How much force, parallel to the incline, must the person apply top? slide the block to the
Transcribed Image Text:Work and Simple machines 1) We left off with the car example in lecture when our cardm=2000kg),had a speed of V= 24m/s and the engine force=70N)and wind resistance= -70N) Now lets see what happens if we decrease the engine force to. 50N, as seen below. V = . 24% V= 0% =5ON a) Is the car speeding up or slowing down? 3lowing dasn b) Find the distance the car will move as it comes to rest. 2) The block of ice weighs 500N (ignore friction) 6m 3m a) How much upward force must a person apply to lift the block of ice straight up at constant speed? b) How much work would the person do to lift the ice, straight up, to a height of 3m? c) How much work would be done sliding the block of ice up the incline? 25ON d) How much force, parallel to the incline, must the person apply top? slide the block to the
3) A 600N block is lifted by the friction free pulley system shown. a) How many strands of rope support (are attached to) the 600N weight? b) What is the tension in each strand? c) What is the tension in the end held by the man (and thus the force he is applying)? d) If the man pulls his end down 120 cm, how much work has he done on the weight? 600N e) How many cm will the weight rise? f) What is the mechanical advantage of this system?
Transcribed Image Text:3) A 600N block is lifted by the friction free pulley system shown. a) How many strands of rope support (are attached to) the 600N weight? b) What is the tension in each strand? c) What is the tension in the end held by the man (and thus the force he is applying)? d) If the man pulls his end down 120 cm, how much work has he done on the weight? 600N e) How many cm will the weight rise? f) What is the mechanical advantage of this system?
Expert Solution
Step 1

Since you have'nt mentioned which part to be answered i, will answer the 2nd question for you.For the next questions to be answered please mention the question no. and resubmit.

Given:

Inclined distance=6m

Height=3m

Weight=500N

so mass m=W/g

m=5009.8=51 kg

 

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