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Mass M, cord with a tension Tf , ramp of angle q. 

What is Tf in terms of M, q

 

 

 

Tf = Mgsinq

 

 

Car at rest, rolls down a 30 degree ramp. How much time to roll 100. m down ramp?

d = 100 m

Vi = 0

t = ?

What else to I need to solve?

 

 

a = gsinӨ

 

 

Vi = 0

a = gsinq = 9.8 m/s2sin30

t = ?

d = 100 m

 

d = d0 + Vit + 1/2 at2

100. m = 0 + 1/2(4.9 m/s2)t2

 

t = 6.4 seconds

 

 

Hanging Box

 

 

 

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