
#1
Jun813, 12:08 PM

P: 13

anything is appreciated!!
1. The mass of a star is 1.830×1031 kg and it performs one rotation in 37.30 days. Find its new period (in days) if the diameter suddenly shrinks to 0.850 times its present size. Assume a uniform mass distribution before and after. 2. A pulley with mass Mp and a radius Rp is attached to the ceiling, in a gravity field of 9.81 m/s2 and rotates with no friction about its pivot. Mass M2 is larger than mass m1. The quantities Tn and g are magnitudes. Choices: true, false, greater than, less than, or equal to. The C.M. of Mp+M1+M2 does not accelerate. T1 is ..... T2 m1g + M2g + Mpg is ..... T3. T3 is ..... T1 + T2 T2 is ..... M2g. The magnitude of the acceleration of M2 is ..... that of m1. 



#2
Jun813, 12:22 PM

Thanks
P: 5,526

This (and the other) post of yours violate the rules of this forum. You won't get any help unless you stick with the rules.



Register to reply 
Related Discussions  
physics circular motion and gravity help please :(  Introductory Physics Homework  4  
Physics circular motion, orbits, and gravity  Introductory Physics Homework  4  
Circular Motion, Center of Gravity, Rotational Motion Homework Help  Introductory Physics Homework  1  
What happens first, gravity and circular motion  Introductory Physics Homework  0  
Circular Motion and Gravity  Introductory Physics Homework  5 