Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Transformation of kinetic energy to potential energy?
A tiny ball at the end of string is swung in a circular vertical loop. The speed of rotation is reducing to the point that the tension on the string at the top of the loop drops to zero, analyze the system for this condition. The forces on the ball consist of its weight the centrifugal force because of motion along a circular path and the tension from the string which provides the centripetal force.
Ft = (mv2)/l- mg - Ts,
Where Ft is the total of the forces m is the mass of the ball and l is the length of the string and Ts is the tension. by the pinnacle of the loop the forces are in
Equilibrium thus Ft = 0 Let vt be the velocity of the ball at the top. If the tension falls to zero there we have
mvt2/l= mg, so,
vt2= gl and,
vt =√gl.
The kinetic energy of a ball at the top of the loop is
mv t 2/2.
At the bottom of the loop the kinetic energy is enhanced by the potential energy at the top. From this we are able to determine the velocity at the bottom
mvb2/2 = (mvt2/2)+ 2mgl
Solving for vb:
vb2= vt2+ 4gl
vb2= gl + 4gl = 5gl
vb =√5gl.
The total force on the ball at the bottom is the sum of the centrifugal force and its weight. This concludes the tension on the string.
Fb = (mvb2/l) + mg
Fb = (5mgl/l) + mg
Fb = 6mg.
Consequently when the rotation rate is such that the ball experiences no vertical forces at the top of the loop it experiences 6 g's at the bottom.
Which Path Requires the Most Energy This condition that can be simulated through use of a easy physics lab in that a force is applied to raise a cart up an incline at stable sp
If A=3i+j+3k, B=-2i-4j-3k and c=2i+4j+3k. Find a unit vector parallel to 3A-2B+4C
The dimentional formula of frequency T -1
The water will not spill Get a small pail and fill it nearly full with water . Swing it around rapidly at arms' length and the water will not spill because of centrifugal force
As seen from above, a playground carousel is rotating counterclockwise about its center on frictionless bearings. A person standing still on the ground grabs onto one of the bars o
what is the concept behind solving question wedge block system if block i made to constrain . how to solve such question by using line of action of force
Verify the principle of working of a cyclotron. Write two uses of this machine. Draw a labelled ray diagram of a reflecting type telescope. Write it's any one benefit over refra
When a hard element is suspended from an axis and made to oscillate about that, then it is known as compound pendulum. C = Initial position of center of mass C' = Position of
A medium is characterised by relative permittivity ε r =45 and relative permeability μ r =5. Determine the speed of e-m wave in the refractive and medium index of the medium.
Factors which are affect velocity of sound in gaseous medium is (1) Effect of density (2) Effect of pressure (3) Effect of temperature : (4) Effect of humidity
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd