Answer to Question #318419 in Mechanics | Relativity for Lexi

Question

A man drags a 76kg crate across the floor at constant velocity by pulling a strap attached to the bottom of the crate. Crate is tilted 25° above horizontal. Strap is included 61° above horizontal (between box top and hands). Center of Gravity of crate coincides with its geometric center. Find magnitude of tension in the strap. Crate is 0.40m tall by 0.90m long.

Answer 1

$T=\frac{mg(\frac w2\sin\alpha-\frac l2\cos \beta)}{l\sin(\beta-\alpha)}=328~N.$