Homework Statement
The figure below shows an object on an inclined ramp of mass 1.30 kg. The angle of the inclined surface is 25° with the horizontal. The object on the ramp is connected to a second object of mass 2.98 kg on a horizontal surface below an overhang that is formed by the...
Homework Statement
A 5.0kg mass is accelerated from rest at the bottom of the 4.0 m long ramp by a falling 20.0kg mass suspended over a fictionless pulley. The ramp is inclined 30º ramp from the horizontal, and the coefficient of kinetic friction = .26.
a. Determine the acceleration of the...
Homework Statement
L = [(2n -1) / 4 ] lamda
I don't understand what is this
and also L = n lamda / 2
In my notes
it only says
f = c/ 4L for 1st harmonic
f = 3c / 4L for 2nd harmonic.. etc
Homework Equations
The Attempt at a Solution
Homework Statement
Suppose in the previous problem m3
balances the see-saw by pulling now on the end 1.5 m from the ful-crum at an angle of 30° from the horizontal as shown.
What force is necessary for balance?
Homework Equations
See picture for both questions
The first question i got 31.4...
Homework Statement
The figure below shows an object on an inclined ramp of mass 0.98kg. The angle of the inclined surface is 32deg with the horizontal. The object on the ramp is connected to a second object of mass 2.13kg on a horizontal surface below an overhang that is formed by the inclined...
and for this question
Question:Two charges of +Q are 1 cm apart. If one of the charges is replaced by a charge of –Q, the magnitude of the force between them is
Ans: the same
Won't they either get attracted or repelled? then , the magnitude will change isn't it?
I don't understand why the answer is B
It make sense if the question is asking which one is the incorrect force since my diagram contain all the arrows except B..