Question

77. Small metallic ball is suspended by a thread
from a fixed support and the pendulum then
swings from one extreme side to another. For
this swinging back and forth motion read the
following statements:
1. The kinetic energy of the system is minimum
at the mid-position.
II. The potential energy is minimum at the extreme
position
III. The sum of potential energy and the kinetic
energy is zero at every position of the
pendulum
Which of the following is true?
(a) I, II and III
(b) II, III and IV
(C) I, III and IV
(d) All the statements are incorrect​

Answer 1

Answer:

(d) All the statements are incorrect

Explanation:

K.E is max at mid point as P.E =0 (PE depends on height)

P.E is max at the ends as it depends on height

Sum of P.E and K.E is never zero (one of them can be zero but not both) if both become zero then the object will come at rest

(I couldn't find IV statement)

This is a self written answer

Mark this answer as the Brainliest ☺️

I hope it helps

Answer 2

Answer:

ok

Explanation: