The bob of a simple pendulum has its maximum kinetic energy at the

The bob of simple pendulum has its maximum kinetic energy at mean position.

Explanation:  

A simple pendulum is a device which consists of mass m hanging from the string of length L attached to the some point.When displaced and released its swings back and forth with periodic motion.

The simple pendulum swings from the mean position to the extreme position and back to mean position and again the extreme position on the other side completing one oscillation.

The velocity varies with oscillation.

The velocity of bob in the extreme position is zero.

The velocity of pendulum is maximum at the mean position and hence has maximum kinetic energy because K.E =0.5 mv².

The law of conservation of energy helps us to understand it .

The height of the bob is at least when it is in the mean position, so when we move to the extreme position on the right side it is at slightly raised height and all its energy is potential energy as it is slightly motionless.As kinetic energy is zero the velocity is zero.

At mean position all energy is kinetic and velocity is maximum.

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  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is