Answer:
maximum speed = 1.55 m/s
speed is 0.775 m/s
Explanation:
given data
mass m = 0.25 kg
spring constant k = 15 N/m
amplitude A = 20 cm = 0.2 m
to find out
maximum speed and speed at the 1/2 amplitude
solution
we know formula for maximum speed that is
maximum speed = amplitude ×√(k/mass)
put all value
maximum speed = 0.2 ×√(15/0.25)
maximum speed = 1.55 m/s
and
at the 1/2 amplitude
we apply here conservation of energy that is
1/2 × m×v² = 1/2 × k×x²
here we know x = A/2 that is 20 /2 = 10 cm = 0.1 m
so
0.25 v² = 15 × 0.1²
v² = 0.600625
v = 0.775
so speed is 0.775 m/s
Answer:
w=m(9.8 m/s^)
Explanation:
weight is equal to your mass times gravity
Answer:
<h2>The answer is 5 s</h2>
Explanation:
The time taken can be found by using the formula
d is the distance
v is the velocity
From the question we have
We have the final answer as
<h3>5 s</h3>
Hope this helps you
gravitational force of earth is given by
so here the force will depend on the product of mass and gravity
so here force will be more if we took the condition of more masses
so here in 3rd figure
there will be maximum force of gravity on it
because it will have 6 boxes so there will be maximum mass
So figure of truck with 6 boxes on it is correct answer
Answer:
4.14 m
Explanation:
In the last leg of the journey the ball covers 2 m in 2ms or 0.2 s .
Let in this last leg , u be the initial velocity.
s = ut + 1/2 g t²
2 = .2 u + .5 x 9.8 x .04
u = 9.02 m /s .
Let v be the final velocity in this leg
v² = u² + 2 g s
v² = (9.02)² + 2 x 9.8 x 2
= 81.36 +39.2
v = 10.97 m / s
Now consider the whole height from where the ball dropped . Let it be h.
Initial velocity u = 0
v² = u² +2gh
(10.97 )² = 2 x 9.8 h
h = 6.14 m
Height from window
= 6.14 - 2m
= 4.14 m
