Series Of Basic Questions
Just found out that this is due in 11 hours so I'm rushing to finish, and this class is about the only one I truly do not understand, even if it is just basics. 1) Atwood Pulley m1=33kg m2=11kg
a)Determine acceleration.
b)What is the tension in the connecting string? 2) Three blocks are pulled by a force of 16.5N along a frictionless surface. What is the acceleration of the system and the tension in the string between m2 and m3?
m1=3.3kg
m2=1.1kg
m3=2.2kg 3) A boy pulls on a mass 30kg with a force of 25N.
a) Ignoring friction what is the accelaration of the box?
b) What is the normal force exerted on the box by the ground? (pulls at an angle of 30 degrees from the ground)
4) An automobile initially moving at 72 km/hr jams the brakes and skids to a stop in a distance of 24 meters on a dry pavement but stops in 81.6meters for a wet pavement(weighs 2211 lbs) a) What is the coefficient of friction for dry weather? b) What is the coefficient of friction for wet weather? c) Is this static or kinetic friction?
Thanks for any help, the better you explain would be best so I can further understand the subject. I'm quite horrible in this class.
