Mechanics Doubts

Here are some problems.if you have solved any one or more please post it's solutions.
If anyone want to see my attempt for a particular problem, they can ask me I will happily show the attempt.
Thanks in advance.

#Mechanics

Easy Math Editor

This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.

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Markdown	Appears as
`italics` or `_italics_`	italics
`bold` or `__bold__`	bold
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1. numbered 2. list	numbered list
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Math	Appears as
Remember to wrap math in `$` ... `$` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$

Comments

@Steven Chase @Karan Chatrath @Mark Hennings @Uros Stojkovic @Hosam Hajjir @Krishna Karthik
Your solutions will be helpful.
Thanks in advance.

Talulah Riley - 8 months, 3 weeks ago

Cool. I'll try soon.

Krishna Karthik - 8 months, 3 weeks ago

@Eric Roberts your solutions will also be helpful. Thanks in advance.

Talulah Riley - 8 months, 3 weeks ago

Bro you've got some big balls. I think Eric Roberts kinda hates you lol.

Krishna Karthik - 8 months, 3 weeks ago

@Krishna Karthik I don't think. I was just clearing his misconception which he was thinking.

Talulah Riley - 8 months, 3 weeks ago

@Talulah Riley – Nope, I still think that he thinks you're an asshole. Eitherway, don't care too much about what he thinks.

Krishna Karthik - 8 months, 3 weeks ago

I don't hate anyone.

Eric Roberts - 8 months, 3 weeks ago

These problems are too advanced for me. Thanks for the olive branch. Perhaps you should extend one to Vinayak instead.

Eric Roberts - 8 months, 3 weeks ago

@Lil Doug I'm definitely not experienced enough in general rotational mechanics to solve this one lol. I have read about rotational mechanics and stuff, but I need to learn to apply it first.

Krishna Karthik - 8 months, 3 weeks ago

Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$