Question

A trolley is accelerating down an incline of angle theta with acceleration g sintheta which of the following is correct (a is the angle made by the string with vertical)

A. `alpha=theta`
B. `alpha=theta^(@)`
C. Tension in the string T=mg
D. Tension in the string `T=mg sec theta`

Answer 1

Correct Answer - A

` Tsina=mgsinthetacostheta`
` Tcosa= mgcos^(2)theta`
`Rightarrow a-theta`