Diagram 4 is the correct answer.
Answer:
P=2736 Pa
Explanation:
According to Newton we have that:
∑
A force is exerted by the elevator to the suitcase, according to 3th Newton's law an equal force but in the opposite direction will appeared on the suitcase, that is:
∑

We know that the pressure is given by:
288.51 N is the magnitude of the force that the beam exerts on the hi.nge.
Given
Mass 0f beam = 40 Kg
The horizontal component of the force exerted by the hi_nge on the beam is 86.62 N
Angle between the beam and cable is = 90°
Angle between beam and the horizontal component = 31°
As the system of the beam, hi_nge and cable are in equilibrium.
The magnitude of the force that the beam exerts on the hi_nge can be calculated by -
F =The horizontal component of force + the vertical component of force
F = 86.62 N + 40 × 9.8 × sin 31°
F =86.62 N + 201.89 N
F = 288.51 N
Hence, the magnitude of the force that the beam exerts on the hi_nge is 288.51 N.
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Answer:
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Explanation:
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Answer:

Explanation:
Given: that,
Angle of inclination of the surface, 
mass of the crate, 
Force applied along the surface, 
distance the crate moves after the application of force, 
a) work done = F× s
work done = 230 × 1.1
work done = 253 J
b) Work done by the gravitational force:

where:
g = acceleration due to gravity
h = the vertically downward displacement
Now, we find the height:

So, the work done by the gravity:

∵direction of force and displacement are opposite.
= - 343.54J
c)
The normal reaction force on the crate by the inclined surface:

d)
Total work done on crate is with respect to the worker:
