Question

(b) A uniform beam AB of length 6.0 m is placed on a horizontal surface and then tilted at an
angle of 31° to the horizontal, as shown in Fig. 2.1.
2.
[2]
90N
А
6.0 m
WY
X 317
B
Fig. 2.1 (not to scale)
The beam is held in equilibrium by four forces that all act in the same plane. A force of 90N
acts perpendicular to the beam at end A. The weight W of the beam acts at its centre of
gravity. A vertical force Yand a horizontal force X both act at end B of the beam.
(i) State the name of force X.
on
(1)
(ii) By taking moments about end B, calculate the weight W of the
N [2]
Crackets.erg 0221-10
(iii) Determine the magnitude of force X.
N[1]
magnitude of force X =​

Answer 1

Answer:

updated Jan am also not to mention that it was the same day as a day after a T the time that I had been in a hospital

Answer 2

Answer:

i) friction

ii) Wcos(31) × 30 = 90 × 6

210 N

iii) X= 90sin(30)

46 N