Recent content by cracktheegg

Homework Statement Differentiation question on physics spring https://sg.answers.yahoo.com/question/index?qid=20140819111550AAvmAjH Homework Equations The Attempt at a Solution https://www.icloud.com/photostream/#AEGY8gBYGdYO6S;2B1E78BF-9378-47B0-B87C-BD50541B4EE7 Why I...

It seem that the ski question answer may be wrong according to the result i get, any clue why?

Homework Statement Question 1 Which statement is true of the coefficient of static friction? Answer It is the force resisting motion. It is proportional to the static friction force. It is a dimensionless quantity expressing the ratio of limiting friction to normal reaction...

I thinking the block at rest mean the slope is not high enough to make it move. Therefore I can only conclude that the static friction is equivalent to friction force

1. The ratio of limiting friction to the normal reaction is known as Answer a)angle of friction. b)angle of repose. c)coefficient of static friction. d)coefficient of kinetic friction. Question 2 When a block is at rest on...

Thanks a lot guys, i learn a lot

Okay Ty, now I just worry about wether should I include the wheel. Because my classmate said the wheel should be in contact with ground, there are no outrigger or hydraulic, it is just stabilizer

Where should the cg be?

haruspex, can you tell me which are the force going the opposite way? I need to learn from my mistake. so please guide me thanks

reposted

Homework Statement https://www.icloud.com/photostream/#AE5oqs3qHTNWQ;B21C49F3-02FB-4EA3-8CE5-D1E2C1FA7C49 Homework Equations The Attempt at a Solution https://www.icloud.com/photostream/#AE5oqs3qHTNWQ;A55D9431-FD6D-4884-9AFC-C4D7C8E39AF1

isit Fsin35(12)?

What angle does AD make to the slope? 35? So what then is the angle F makes to AD? 20?

thanks, T T but I really can't understand the force of roller what is the angle i should use?and the distance?

My moment equilibrium equation Take A as moment: 5cos20(6)-5cos70(1)+2(cos20*8) - Fsin15(0.53) +F cos15 (0.55)=0 sin20*1.6=0.55 cos 2-*1.6=0.53