1. A
sonometer wire of length 0.5 m is stretched by a weight of 5 kg. The
fundamental frequency of vibration is 100 Hz. Determine the linear density of
material of wire.
Sunday, November 4, 2018
Thursday, November 1, 2018
11.9 RAY OPTICS 01- How to find the distance of image for convex mirror.
An object is placed at a distance of 6 cm from a convex mirror. If the focal length of a mirror is 12 cm find the position and nature of an image.
Sunday, October 7, 2018
How to find angular acceleration - 02
The
angular displacement of a particle is given by
𝜃= 〖5𝑡〗^3+〖10𝑡〗^2−2𝑡+3, where time ‘t’ is in second and 𝜃 is in rad. The angular acceleration of particle at
t = 3
sec
a) 90 𝑟𝑎𝑑 𝑠^(−2) b) 110 𝑟𝑎𝑑 𝑠^(−2)
c) 100
𝑟𝑎𝑑 𝑠^(−2) d)
120 𝑟𝑎𝑑 𝑠^(−2)
Saturday, September 15, 2018
How to find angular acceleration....
The
angular displacement of a particle is given by
𝜃= 〖6𝑡〗^2−4𝑡+6, where time ‘t’ is
in second and 𝜃 is in
rad. The angular acceleration of particle at t = 4 sec
a) 6 𝑟𝑎𝑑 𝑠^(−2) b) 24 𝑟𝑎𝑑 𝑠^(−2)
c) 12 𝑟𝑎𝑑 𝑠^(−2) d)
48 𝑟𝑎𝑑 𝑠^(−2)
Monday, July 30, 2018
The relation between time ‘t’ and distance ‘x’ is t=ax^2+bx
The
relation between time ‘t’ and distance ‘x’ is t=ax^2+bx, where ‘a’ and ‘b’ are constant. The acceleration is…..
a. -2abv^2
b. 2bv^2
c. -2av^3
d. 2av^2
b. 2bv^2
c. -2av^3
d. 2av^2
Friday, January 5, 2018
Coefficient of static friction between coin and the turntable.
A coin is kept at a distance 10 cm from the center of turn
table of radius 1 m just begin to slip, when the turn table rotate at a speed
of 90 r.p.m. calculate the coefficient of static friction between the coin ant
turn table.
Solution:
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