+91-87964 74404
FlagBACK
Question icon
Grade 11General Physics

a particle of mass m1 is fastened to one end of a string and one of m2 to the middle point,the other end of the string being fastened to a fixed point on a smooth horizontal table. The particles are then projected,so that the two portions of the strings are always in the same straight line and describes horizontal circles.Find the ratio of tensions in the two parts of the string.

Profile image of khushi
10 Years agoGrade 11
Answers icon

1 Answer

Profile image of Saloni Doshi
8 Years ago
For particle with mass m1, 1/2m1(v1)2= 2m1g(2h) [ according to conservation of mechanical energy] therefore v1=(8gh)1/2.     Since the tension in the string provides the centripetal force therefore T1=m1(v1)2/2h   We get T= 4m1gh.   For particle with mass m2, 1/2m2(v2)2=   2m2gh therefore v2= (4gh)1/2.   For this particle T2-T1=m2(v2)2/2h = 2m2g therefore from these equations we get T2= 2m2g + 4m1g   Therefore T1/T2= 2m1/m2+2m1                                                                       
 

Other Related Questions on general physics

question mark

 In viewing through a magnifying glass, one usually positions one's eyes very close to the lens. Does angular magnification change if the eye is moved back?

general physics
1 Answer Available

Last Activity: 9 Months ago

question mark
moment of inertia of a equilateral triangle about an axis passing through centre and perppendicular to the plane
general physics
1 Answer Available

Last Activity: 3 Years ago

question mark
. Because of the rotation of the earth, a plumb bob may not hang exactly along the direction of
the earth’s gravitational pull (its weight) but deviates slightly from this direction. Calculate the
deviation (a) at 40 latitude, (b) at the poles, and (c) at the equator
general physics
1 Answer Available

Last Activity: 3 Years ago

question mark
The length of a massless rod is measured using vernier callipers having 10 vernier scale divisions and least count of 0.1 mm. Two masses 1.00 ± 0.01 kg and 4.00 ± 0.02 kg are attached to its ends. If reading of vernier scale is 5 divisions coinciding with 1.3 cm, what is the % error in locating centre of mass from lighter mass
general physics
2 Answers Available

Last Activity: 3 Years ago

question mark
A block is kept on x-y plane at a point (2m,3m). It is pushed with a force of magnitude 10 Ntowards point (5m,7m). The force can be represented as?
general physics
1 Answer Available

Last Activity: 3 Years ago