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Sep
9
comment Investigation of a pendulum's period, problem creating equation to sum the dynamic velocity
i would like to know if inverse of this function $t = t(\theta)$ exist or not.
Apr
30
awarded  Popular Question
Mar
19
awarded  Popular Question
Jan
14
awarded  Popular Question
Sep
21
awarded  Custodian
Aug
17
answered First integral of an equation of motion: $\mu\ddot r=-\frac{k}{r^2}$
Aug
6
comment Why do rolling disc (coin) move in circular path?
all right thanks!!
Aug
6
accepted Why do rolling disc (coin) move in circular path?
Aug
6
revised Why do rolling disc (coin) move in circular path?
added 109 characters in body
Aug
6
comment Why do rolling disc (coin) move in circular path?
@Ankush The coin is moving in circle means it should be spinning ... with period equal to the period of circular motion.
Aug
6
comment Why do rolling disc (coin) move in circular path?
$J$ is angular momentum.
Aug
6
comment Why do rolling disc (coin) move in circular path?
@Ankush since the coin is moving in circle ... something must continuously change the direction of the coin (so that coin follows circular path).
Aug
6
revised Why do rolling disc (coin) move in circular path?
added 2 characters in body
Aug
6
comment Why do rolling disc (coin) move in circular path?
wouldn't that torque be in out direction? please check update.
Aug
6
comment Why do rolling disc (coin) move in circular path?
and thanks for response!!
Aug
6
comment Why do rolling disc (coin) move in circular path?
shouldn't this kind of torque make the coin fall? ... it comes towards us.
Aug
6
comment Why do rolling disc (coin) move in circular path?
could you elaborate a bit please?
Aug
5
revised Why do rolling disc (coin) move in circular path?
deleted 628 characters in body
Aug
5
revised Why do rolling disc (coin) move in circular path?
deleted 628 characters in body
Aug
5
comment Why do rolling disc (coin) move in circular path?
can you elaborate your answer on Torque (for thinner disc)?