Linear velocity of a rotating fan as a whole generally zero. Is it in mechanical equilibrium?
Justify your.

A wheel of diameter 20 cm is rotating 600 rpm. The linear velocity of particle at its rim is

A wheel of a vehicle is rotated to a uniform angular acceleration about its axis. Initially its angular velocity is zero. It rotates through an angle theta_1 in the first 2 s and in the next 3 s, it rotates through an additional angle theta_2 . The ratio of theta_2/theta_1 is

Answer the following questions: In the following case, state whether work is done or not. Justify your answer: Activity: A body slides on a frictonless horizontal surface with a uniform velocity.

In a Mendelian monohybrid cross, the F2 generation shows identical genotypic and phenotypic ratios. What does it tell us about the nature of allelesinvolved?Justify your answer.

To simulate the acceleration of large rockets , the astronauts are spun at the end of long rotating beam of radius 9.8 m. What will be angular velocity required for generating centripetal acceleration 8 times the acceleration due to gravity ?

Draw graphs of displacement , velocity and acceleration against phase angle, for a particle performing linear S.H.M . From , the positive extreme position. Deduce your conclusions from the graph.

The following pedigree shows a particular trait which is absent in the parents but found in the subsequent generation irrespective of the sex. Analysis the pedigree chart and answer the following questions: What kind of disorder does the pedigree show? Justify your answer.

To stimulate the acceleration of large rockets astronauts are spun at the end of a long rotating beam of radius 9.8m. Angular velocity, required to generate a centripetal acceleration 8 times the acceleration due to gravity, is.

When a ceiling fan is switched off, its angular velocity reduces to 50% while it makes 36 rotations. How many more rotations will it make before coming to rest?(Assume uniform angular retardation)

A ceilling fan rotates about its own axis with some angular velocity. When the fan is switched off, the angular velocity becomes (1/4)^(th) of the original in time 't' and 'n' revolutions are made in that time. The number of revolutions made by the fan during the time interval between switch off and rest are (Angular retardation is uniform)