Answer:
Car drivers and front seat passengers must wear a seat belt, unless they have a medical exemption certificate. Adults travelling in the rear of a car must also use seatbelts, if they're fitted. It's the responsibility of the adult passenger (not the driver) to make sure that they are using the seatbelt.
Answer:
a) 23.39
b) 44977.08 N
c) 1922.92N
d) 454.31 MPa
e) 8.32 MPa
f)
Explanation:
a) fiber-matrix load ratio:
Let's use the formula :
b & c)
Total load is given as:
Fc = Ff + Fm
46900 = Fm(23.39) + Fm
46900 = 24.39 Fm
Actual load carried by matrix=
= 1922.92N=> answer for option c
Actual load carried by fiber, Ff:
Ff = 46900 - 1922.92
Ff = 44977.08 N => answer option b
d)
Let's find area of fiber, A_f.
Ac = Cross sectional area =300mm²
= 0.3 * 300 = 99 mm²
Area of matrix=
= 0.7 * 300 = 231 mm²
Magnitude of the stress on the fiber phase:
e) Magnitude of the stress on the matrix phase.
f) Strain in fiber =
Strain in matrix =
Composite strain =
Answer:
c from transmitter to a receiver