weight = mg acts
downwards <span>
normal force = N acts upwards.
and force F acts at an angle θ below the horizontal.
(Let us assume that the woman pushes from the left, so F is
acted towards the right, which is below the horizontal)
so that, Frictional force, f=us*N acts towards the left
Now we balance the forces along x and y directions:
y direction: N = mg + F sinΘ
x direction: us * N = F cosΘ
We let the value of µs be equal to a value such that any F
will not be able to move the crate. Then, if we increase F by an amount F',
then the force pushing the crate towards the right also increases by F' cosΘ. Additionally,
the frictional force f must raise by exactly this amount.
Since f can’t exceed us*N, so the normal force must increase
by F' cosΘ/us.
Also, from the y direction equation, the normal force exceeds
by F' sin Θ.
<span>These two values must be the same, therefore:
<span>us = cot θ</span></span></span>
Answer:
Newton's first law states that when the vector sum of all forces acting on an object (the net force) is zero, the object is in equilibrium. If the object is initially at rest, it remains at rest. If it is initially in motion, it continues to move with constant velocity.
Explanation:
Explanation:
A or E I think cous I use to do this in yr 7
Complete Question
Complete Question is attached below
Answer:
Explanation:
From the question we are told that:
Side length s=1.13m
Left field strength 
Right field strength 
Front field strength 
Back field strength 
Top field strength 
Bottom field strength 
Generally, the equation for Charge flux is mathematically given by
Where
Theta for Right,Left,Front and Back are at an angle 90
Therefore
with respect to Right,Left,Front and Back
Generally, the equation for Charge Flux is mathematically also given by
Where
Therefore
Giving
Answer: instantaneous speed.
Explanation: A highway speed limit posted as 90km/hr would be the instantaneous speed because it’s just the speed for that moment.
