Physics Conceptual Questions - Mixed

[cristo]

I probably should not be speaking for cristo, but I don't think he was disagreeing with you. I think he was responding to threewingedfury, but since he did not quote the post to which he was replying, the sequence suggested otherwise.

So to all who read here, PLEASE avoid creating such a jumpled thread by keeping problems in separate threads, and please identify the posts to which you are responding if it is not the one directly above yours.

Yes, olderdan is correct, apologies for the way it appeared!

hey christo, sorry to go back to something old but on that first problem, it seems that choice E is only right if T=mg. this bothers me.

As pointed out above, I answered the wrong question. Tcos theta is the answer.

Now I've worked out how to quote more than one thing, I will do in future!

 

[edward123]

i think it should be T cos $$\theta$$
bcoz the body is moving with constant velocity and so acc to the Newton's first law of motion it is moving under the balanced forces