Login
Remember
Register
Home
All Activity
Q&A
Questions
Hot!
Unanswered
Tags
Categories
Users
Ask a Question
Ask a Question
If object starts from rest and covers angle of 60 rad in 10 s in circular motion, then magnitude of angular acceleration will
0
votes
asked
Mar 19, 2022
in
11th Physics
by
varun
(
6.7k
points)
If object starts from rest and covers angle of 60 rad in 10 s in circular motion, then magnitude of angular acceleration will be
Options:
(a) `1.2 rad s^(-2)` (b) `1.5 rad s^(-2)` (c) `2 rad s^(-2)` (d) `2.5 rad s^(-2)`
marks1
chapter7
#mcq
Please
log in
or
register
to answer this question.
0
Answers
Categories
All categories
Maths
(8.6k)
Science
(14)
Physics
(3.4k)
11th Physics
(1.5k)
12th Physics
(1.9k)
Related questions
A wheel is rotating at 900 rpm about its axis. When the power is cut-off, it comes to rest in 1 min. The angular retardation (in rad `s^(-2)`)
A cord of negligible mass is wound round the rim of a fly wheel of mass 20 kg and radius 20 cm. A steady pull of 25 N is applied on the cord as shown in Fig. . The flywheel is mounted on a horizontal axle with frictionless bearings. (a) Compute the angular acceleration of the wheel. (b) Find the work done by the pull, when 2m of the cord is unwound. (c) Find also the kinetic energy of the wheel at this point. Assume that the wheel starts from rest. (d) Compare answers to parts (b) and (c).
AC Generator An AC generator produces electrical energy from mechanical work, just the opposite of what a motor does. In it, a shaft is rotated by some mechanical means, such as an engine or a turbine starts working and an emf is induced in the coil.It is based on the phenomenon of electromagnetic induction which states that whenever magnetic flux linked with a conductor (or coil) changes, an emf is induced in the coil. When the coil is rotated with a constant angular speed `omega`, then the angle `theta` between the magnetic field vector B and the area vector `A`
Rolling MotionThe rolling motion can be regarded as the combination of pure rotation and pure translation. It is also one of the most common motions observed in daily life.Suppose the rolling motion (without slipping) of a circular disc on a level surface. At any instant, the point of contact `P_0` of the disc with the surface is at rest (as there is no slipping). If `v_(CM)` is the velocity of centre of mass which is the geometric centre C of the disc, then the translational velocity of disc is `v_(CM)`, which is parallel to the level surface.Velocity of centre of
Rolling MotionThe rolling motion can be regarded as the combination of pure rotation and pure translation. It is also one of the most common motions observed in daily life.Suppose the rolling motion (without slipping) of a circular disc on a level surface. At any instant, the point of contact `P_0` of the disc with the surface is at rest (as there is no slipping). If `v_(CM)` is the velocity of centre of mass which is the geometric centre C of the disc, then the translational velocity of disc is `v_(CM)`, which is parallel to the level surface.Velocity of centre of