Question

a college student measures his height just before he goes to bed at night and also right after he gets up in the morning the next day. His measurements are 1.80m, and 1.82m respectively.What is the compressive strain on his body due to the normal force and the gravity that are acting on him all day long? a)2/182 b)2/180 c) 1.82 m -1.80m d)182/180 e)180/182

Answer 1

here,

the height of student just before he goes to bed at night , h = 1.8 m = 180 m

the height of student just before he gets up in the morning the next day , h' = 1.82 m = 182 m

the compressive strain on his body due to the normal force and the gravity that are acting on him all day long , s = (h' - h) /h'

s = (182 - 180)/182

s = 2 /182

the compressive strain on his body due to the normal force and the gravity that are acting on him all day long is a) 2/182