Answer:
r = 2.0m
when t = 0, the angular displacement is zero.
Explanation:
When the angular acceleration is 0.01 m/s2, you can calculate
angular acceleration = change in angular velocity/ time
well it depends on how much force was added but if they both have the same amount of force and they were rolled at the same time either they will bounce backwards or roll backwards not thats your question will they roll backwards are bounce backwards?
Answer:
option (b)
Explanation:
B = 0.7 x 10^-4 T
v = 940 km/h = 940 x 5 / 18 = 261.11 m /s
l = 60 m
Th emotional emf is given by
e = B v l
e = 0.7 x 10^-4 x 261.11 x 60 = 1.096 V
e = 1.1 V
Answer:
One way to look at this is to consider the forces acting on any point in a string.
For a very small portion of string F = M a must still hold. As M approaches zero the small portion of string would have to approach infinite acceleration if the net force on that portion of string were not zero.
One generally considers the net force acting on the center of mass of an object not the individual forces acting on each infinitesimal mass composing
the object.
Answer:
Horizontal distance from the foot of the cliff is 40 m
Explanation:
Given :
Speed of stone 
Vertical distance 
m
Gravitational acceleration 
From the kinematics equation,
Where 
initial velocity ( 
)
So time take to fall down,
sec
Now find horizontal distance travel by stone,
m
Therefore, the horizontal distance travel by stone is 40 m
