lever (The things that flick the ball around)
Inclined plane (The hill the ball rolls down)
Wedge (The bumps that stop the ball from rolling certain places)
Answer:
L = 0.0319 H
Explanation:
Given that,
Number of loops in the solenoid, N = 900
Radius of the wire, r = 3 cm = 0.03 m
Length of the rod, l = 9 cm = 0.09 m
To find,
Self inductance in the solenoid
Solution,
The expression for the self inductance of the solenoid is given by :
L = 0.0319 H
So, the self inductance of the solenoid is 0.0319 henries.
(any unit of length) divided by (any unit of time)²
is a unit of acceleration.
This movement of the coin relative to the knee is not under an inertial frame, because knee is accelerated relative to the coin.
a) coin acceleration relative to the ground: g = 9.81 m/s^2. This is the acceleration due to the atraction of the earth, given that the coin is not tied to the car or to the knee.
b) coin acceleration relative to the knee: acceleration of the coin relative to the ground - acceleration of the knee relative to the ground = - g - (-1.24g) = 0.24 g = 0.24 * 9.81 m^2^2 = 2.354 m/s^2
c) time to the coin move 2.2 m upward, relative to the car
d = a*t^2 / 2 , where a is the acceleration relative to the car (same of the knee)
=> t = √(2d/a) = √(2*2.2m/2.354 m/s^2) = 1.37 s
d) actual force on the coin
Use the acceleration relative to the ground, a=g = 9.81 m/s^2
F = m*a = 0.567 g * 10^-3 kg/g * 9.81 m/s^2 = 5.56*10^-3 N
e) apparent force
Use apparent acceleration, a = 2.354 m/s^2
F = m*a = 0.567*10^-3 kg * 2.354 m/s^2 = 1.33*10^-3 N
