The most possible cause of 35% increase in time measured is due to the acceleration due to gravity which is 70% less than 9.80 m/s² at this location.
Explanation:
We know that for a linear motion
S=ut+(1/2)*a*t²
Where S= Distance covered
u= initial velocity
t=time period
a= acceleration due to gravity
Since the body is falling vertically downwards "a" is to be replaced by "g"
Moreover, The body is falling from rest "u"=0
Hence the equation reduces to S=1/2*g*t²
t²=2S/g
Since the "g" is in denominator thus a decreased value of "g" would mean increased period. Thus an increase of 35% in the period would translate to a 70% decrease in "g".
a) Change in Kinetic energy = Work Done
We require Normal Force N,
N + 188 X sin(28.6 ) - m x g = 0
so N = m x g - 188 x sin(28.6)
= 19.7 Kg x 9.8m/s^2 - 188 x sin(28.6)
= 19.7 Kg x 9.8m/s^2 - 188 x 0.478
= 193.06 Kg.m/s^2 - 89.864 N
= 103.196 N
Wvertical = F*x = μ X 103.196 x 48.7 = 0.103 X 103.196 x 48.7
= 517.641 N
Whorizontal = F*x = F x cos(28.6 ) x 48.7
= 188 x cos(28.6 ) x 48.7
= 188 x 0.877 x 48.7
= 8029.46 J
b) V^2 = U^2 + 2 x a x s
V = (2 x a x s)^0.5
= 13.486 m/s
Answer:
we see it is a linear relationship.
Explanation:
The magnetic flux is u solenoid is
B = μ₀ N/L I
where N is the number of loops, L the length and I the current
By applying this expression to our case we have that the current is the same in all cases and we can assume the constant length. Consequently we see that the magnitude of the magnetic field decreases with the number of loops
B = (μ₀ I / L) N
the amount between paracentesis constant, in the case of 4 loop the field is worth
B = cte 4
N B
4 4 cte
3 3 cte
2 2 cte
1 1 cte
as we see it is a linear relationship.
In addition, this effect for such a small number of turns the direction of the field that is parallel to the normal of the lines will oscillate,
Answer:
Mass is zero if the whole rope is horizontal. Imaginary rope.
Explanation:
With any mass at all, only a small section of the rope will be truly horizontal. The rope curve will be a a catenary.
Answer: 20.4m
Explanation:
Mass = 0.145kg
Initial velocity, Vi =20m/s
Initial kinetic energy K =1/2mv^2
Initial potential energy Ui = mgx = 0joules
: From conservation of energy,
Uf + Kf = Ui + Ki ( where f represent (final) )
Thus
mgXf + 0 = 0+1/2 mv^2
Xf = Vi^2/ 2g
= (20m/s) ^2/ 2(9.81m/s)^2
=20.4m