Answer:
Explanation:
We are given that
We have to find the rate at which R is changing.
In parallel
Using the formula
Substitute the values
Answer:
v = 3.7 m/s
Explanation:
As the swing starts from rest, if we choose the lowest point of the trajectory to be the zero reference level for gravitational potential energy, and if we neglect air resistance, we can apply energy conservation as follows:
m. g. h = 1/2 m v²
The only unknown (let alone the speed) in the equation , is the height from which the swing is released.
At this point, the ropes make a 30⁰ angle with the vertical, so we can obtain the vertical length at this point as L cos 30⁰, appying simply cos definition.
As the height we are looking for is the difference respect from the vertical length L, we can simply write as follows:
h = L - Lcos 30⁰ = 5m -5m. 0.866 = 4.3 m
Replacing in the energy conservation equation, and solving for v, we get:
v = √2.g.(L-Lcos30⁰) = √2.9.8 m/s². 4.3 m =3.7 m/s
Yes and no science is a way and show us how to prove right and wrong so it’s important that you put it show they have evidence and experience to back up what is right and wrong
Answer:
is called square of Coefficient of Restitution
Explanation:
As we know that the coefficient of restitution is the ratio of the body after collision to the ratio of the body before collision.
<u>Mathematically:</u>
where:
relative velocity after collision
relative velocity before collision
also, in terms of Kinetic energy:
where:
relative kinetic energy after collision
relative kinetic energy before collision
- e=0 for perfectly elastic collision
- 0<e<1 for real world inelastic collision
- e>1 for the collision in which energy is released
- e<1 for the objects passing through one another without fully engaging.
<h2>♨ANSWER♥</h2>
length of V-50 = 49mm
length of V-1 = 49/50mm
= 0.98mm
so,
minor measurement = (M-1) - (V-1)
= 1mm -0.98mm
= 0.02mm
☆ Therefore,
The minor measurement of the vernier scale is 0.02mm.
<u>☆</u><u>.</u><u>.</u><u>.</u><u>hope this helps</u><u>.</u><u>.</u><u>.</u><u>☆</u>
_♡_<em>mashi</em>_♡_