[" A simple pendulum is vibrating with an angular amplitude of "90^(@)." For what value of "theta" is the acceleration directed "],[" vertically upward "],[" i.horizontally "],[" ii.vertically downward "]

A simple pendulum is oscillating with angular displacement 90^(@) For what angle with vertical the acceleration of bob direction horizontal?

A simple pendulum is oscillating with angular displacement 90^(@) For what angle with vertical the acceleration of bob direction horizontal?

A simple pendulum is oscillating with an angular amplitude of 90^(@) as shown in the figure. The value of theta for which the resulting acceleration of the bob is directed (i) vertically downward, (ii) vertically upward and (iii) horizontally is

A simple pendulum is vibrating with an angular amplitude of 90^(@) as shown in figure. For what value of alpha (angle between string and vertical) during its motion, the total acceleration is directed horizontally ?

A simple pendulum is vibrating with an angular amplitude of 90^(@) as shown in figure. For what value of alpha (angle between string and vertical) during its motion, the total acceleration is directed horizontally ?

A simple pendulum has a bob of mass m and swings with an angular amplitude phi . The tension in thread is T . At a certain time the string makes an angle theta with the vertical (theta le phi)

A simple pendulum has a bob of mass m and swings with an angular amplitude phi . The tension in thread is T . At a certain time the string makes an angle theta with the vertical (theta le phi)

A simple pendulum oscillates with an anglular amplitude of theta . If the maximum tension in the string is 3 times the minimum tension, then the value of cos theta is