Answer:
F = M a is the vector equation involved
F = T - M g are the forces acting on the elevator (scalar equation)
T - M g = M a
T = M (a + g) remember this a scalar
If a is slowing down then it must have a positive acceleration upwards
Therefor the tension in the cable must be greater than zero
When the tension increases to M g, a has increased to zero
For a to be zero, no acceleration, T = M g
Answer:
a). v=2776 m/s
Explanation:
The speed of the water droplet for the fish be successful is
Taking the distance in axis 'x' and 'y'
The time is the velocity in axis 'x' with the angle 70 so
Now using the time in terms of velocity the motion in axis 'y' can find the velocity to be the fish successful
Answer:
55.8W
Explanation:
P= V^2/R
R= V^2/P
For series connection
Req= R1+ R2= V^2/310 + V^2/180
R=V^2/P= V^2/310 + V^2/180
But V^2 will cancel out
P= 1/(1/310 + 1/180)
P= 55.8W
Explanation:
the correct answer is C.
if there is no wind resistance; in vaccum both will hit the ground at the same time.
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