Answer:
<h2>The angular velocity just after collision is given as</h2><h2>Explanation:
As per given figure we know that there is no external torque about hinge point on the system of given mass
So here we will have
now we can say
so we will have
Linear momentum of the system is not conserved because at the time of collision the hinge point will exert net external force on the system of mass
So we can use angular momentum conservation about the hinge point
Answer:
frequency
Explanation:
The phenomenon of apparent change in frequency due to the relation motion between the source and the observer is called Doppler's effect.
So, when we move farther, the frequency of sound decreases. The formula of the Doppler's effect is
where, v is the velocity of sound, vs is the velocity of source and vo is the velocity of observer, f is the true frequency. f' is the apparent frequency.
#1)
1). A point on the outside of a spinning top whose rotational speed is constant.
It will not accelerate as its net speed is ZERO
2). A skydiver whose air resistance is equal to that of her weight.
Since weight is counterbalanced by resistance so here net force is zero so acceleration must be zero here
3). A car on the freeway experiencing a net force of -120 N.
Since there it acts net force F = -120 N so it will accelerate here
4). A submerged beach ball whose buoyant force is eight times the force of gravity on it.
Since buoyant force is more than weight of the ball so it will accelerate upwards
#2)
A non accelerating fra me is always a valid inertial frame
A frictionless spinning merry go round.
(since it is having centripetal acceleration so it is non inertial frame)
A falling rock.
(Since it is falling with acceleration a = 9.8 m/s^2 so it is non inertial)
A hot air balloon moving at 30 degrees east of north with no net force.
(Since net force on hot air balloon is ZERO so it is Inertial Frame)
A space shuttle whose boosters just ignited for takeoff.
(Since space shuttle ignite the boosters so it will accelerate here and hence it is non inertial)
#3
here two forces given as
towards right
towards Left
Since left side applied force is more than right side applied force so net force on it will be towards Left and it is given by
So it is 60 N Left
Answer:
The coin travels 1.8348 meters above its point of release.
Explanation:
Initial speed = 6 m/s (Assumed vertical speed as not stated in question)
Final Speed = 0 m/s (at the highest point in air)
Acceleration due to gravity = -9.81 m/s^2
Equation of motion used:
s = 1.8348 m
Thus, the coin will travel 1.8348 meters up to its highest point in the air.