1. The potential energy of mass m at a distance r from a fixed point O is given
by V(r)= kr? / 2, where kis a positive
constant of appropriate dimensions.
This particle is moving in a circular
orbit of radius R about the point 0. If v
is the speed of the particle and L is the
magnitude of its angular momentum
about 0, which of the following
statements is (are) true ?
(More than One Correct Option, 2018)
k
k.
(a) v =
R
(b) v =
R
V 2m
mk
(d) L =
R?
V 2
(c) L = Vmk R2​

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.

the following is queen elizabeth’s purposes:

- to encourage the parliament that the technique of picking successors to the seat based merely on birthright needs to be reviewed.

- (not) to convince the parliament that her kid should not be measured as a likely choice for heir to the english power.

- to persuade the parliament that merely since she has a child does not assure that the kid will be a capable leader.

- to sway the parliament how shattering it could be if they proceeded discourteously concerning her or her child.