Two rough blocks are at rest on a slope as shown. Block A mass is 5 kg. Block B mass is 10 kg. The coefficient of static friction is 0.5 between all surfaces. y A

A mass m1 = 12.0 kg sits on a level tabletop, and is attached to a second hanging mass m2 by a rope draped over a frictionless pulley.  The coefficient of static friction between the 12.0-kg block and the tabletop is 0.450.   What is the minimum mass m2needed so that the 12.0-kg block will just begin to slide?

F(t) Force_Crate Known values: Mass of Block 68 kg TT Hs μk 0 0.63 0.53 26° Problem Statement: A crate is initially at rest on a sloped surface, when a force is applied: F(t) where t is in seconds. Answers: When t=44.47 seconds, the crate has not yet started moving. Find the magnitude of the friction force at that time: 317.771 N The direction of the friction force at that time is: down the slope Find the time required for the crate to start moving: Find the crate's speed when t=174.9 s: 9.485 m/s Be sure to include units with your answers. 169.756 S 240+0.2 N,

A supermarket pushcart is being pushed at 45 degrees with respect to the horizontal from the starting point to the cashier, which is 25 feet away. The cart is 5kg, it contains 2 boxes of 10-1b flour and seven packs of half-kilogram sugar. The coefficient of friction between the wheels and the floor is 0.03. a. What force is required? b. How much force is required?