Answer:
the answer is Energy conversion
Explanation:
I hope this helped
Answer:
<h2>The answer is 90 kg</h2>
Explanation:
In order to find the mass of the football we use the formula
where
p is the momentum
v is the velocity
We have
We have the final answer as
<h3>90 kg</h3>
Hope this helps you
Answer:
Explanation:
Moment of inertia of the metal rod pivoted in the middle
= M l² / 12
If the spring is compressed by small distance x twisting the rod by angle θ
restoring force by spring
= k x
moment of torque about axis
= k x l /2
= k θ( l /2 )² ( x / .5 l = θ )
=
moment of torque = moment of inertia of rod x angular acceleration
k θ( l /2 )² = M l² / 12 d²θ/dt²
d²θ/dt² = 3 k/M θ
acceleration = ω² θ
ω² = 3 k/M
ω = √ 3 k / M
