Answer:
B. 57.4 N horizontal (right)
<u>Explanation</u>:
using cos method:
<em>As its vertical, the direction of this force should be up.</em>
Velocity of an object of mass 5 kg increases from 3 m/s to 7 m/s on applying a force continuously for 2 s. Find out the force ap
1 answer:
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Answer:
Explanation:
Given that
Mass = m
Height = h
Length = d
Angle = θ
Friction force = f
When block slides downward then friction force will act upwards
The force due to gravity along inline plane
Fg= mg sinθ
Lets 'a' is the acceleration
From Newtons law
mg sinθ - f = m a
a= (g sinθ - f/m)
Given that initial speed u= o ,lets v is final speed
v²=u²+ 2 a s
v²=2 x (g sinθ - f/m) x d
Answer:
a) E = 0
b)
Explanation:
The electric field for all points outside the spherical shell is given as follows;
a)
From which we have;
E = 0/A = 0
E = 0
b)
By Gauss theorem, we have;
Therefore, we get;
The electrical field outside the spherical shell
Therefore, we have;