Can somebody please help me solve this question? the wording is really confusing me.
"A raft is bobbing up and down beside a dock with an amplitude of 0.40m and a period of 4.0s. The equilibrium position of the raft is 0.45m below the dock. It is safe and comfortable to step onto the raft only when it is no more than 0.35m below the dock. How much time do people have to step on the raft safely during each period of the raft's oscillation?"
The answer given is 1.7s. I have been trying to make equations to represent the bobbing of the dock, but it's useless, and I do not know how to solve for the time. The examples given in the book are so trivial compared to this, and I'm a little rusty from not having done any physics or math for a while, so if this seems easy to you, that's why. Is there a really simple thing I'm overlooking? Any help would be appreciated! Thank you.
"A raft is bobbing up and down beside a dock with an amplitude of 0.40m and a period of 4.0s. The equilibrium position of the raft is 0.45m below the dock. It is safe and comfortable to step onto the raft only when it is no more than 0.35m below the dock. How much time do people have to step on the raft safely during each period of the raft's oscillation?"
The answer given is 1.7s. I have been trying to make equations to represent the bobbing of the dock, but it's useless, and I do not know how to solve for the time. The examples given in the book are so trivial compared to this, and I'm a little rusty from not having done any physics or math for a while, so if this seems easy to you, that's why. Is there a really simple thing I'm overlooking? Any help would be appreciated! Thank you.