0 votes
61 views
asked in MD by (215k points)
What force will be required at a radius of 8 cm to raise and lower an 11,00 kgf crossbar of a planner which is raised and lowered by two 38 mm square thread single-start screws having a pitch of 7 mm? The outside and inside diameters of the collar are 76 mm and 38 mm respectively. Assume the co-efficient of friction at the threads as 0.11 and at the collar as 0.13.

Please log in or register to answer this question.

Welcome to Q&A discussion forum, where you can ask questions and receive answers from other members of the community.

10.4k questions

274 answers

26 comments

15.3k users

...