Author Question: A 7.8-kg solid sphere, made of metal whose density is 2500 kg/ , is suspended by a cord. When the ... (Read 78 times)

ereecah · **on:** Jul 29, 2018

A 7.8-kg solid sphere, made of metal whose density is 2500 kg/ , is suspended by a cord. When the sphere is immersed in water (of density 1000 kg/m3), what is the tension in the cord?

A) 110 N B) 76 N C) 46 N D) 92 N E) 61 N

Question 2

A uniform solid 5.25-kg cylinder is released from rest and rolls without slipping down an inclined plane inclined at 18 to the horizontal. How fast is it moving after it has rolled 2.2 m down the plane?

A) 4.3 m/s B) 3.0 m/s C) 2.6 m/s D) 5.2 m/s E) 3.7 m/s