(Solved): Which of the following freebody diagrams represents the car going uphill at a constant speed? 33 - ...

Which of the following freebody diagrams represents the car going uphill at a constant speed? 33 - [SSM] A block weighing 20-N rests on a horizontal surface. The coefficients of static and kinetic friction between the surface and the block are \( \mu_{\mathrm{s}}=0.80 \) and \( \mu_{\mathrm{k}}=0.60 \). A horizontal string is then attached to the block and a constant tension \( T \) is maintained in the string. What is the subsequent force of friction acting on the block if \( (a) T=15 \mathrm{~N} \) or (b) \( T=20 \mathrm{~N} \) ? \( 35-[\mathbf{S S M}] \) A 100-kg crate rests on a thick-pile carpet. A weary worker then pushes on the crate with a horizontal force of \( 500 \mathrm{~N} \). The coefficients of static and kinetic friction between the crate and the carpet are \( 0.600 \) and \( 0.400 \), respectively. Find the subsequent frictional force exerted by the carpet on the crate. 36 - A box weighing \( 600 \mathrm{~N} \) is pushed along a horizontal floor at constant velocity with a force of \( 250 \mathrm{~N} \) parallel to the floor. What is the coefficient of kinetic friction between the box and the floor? 39 • A \( 5.00-\mathrm{kg} \) block is held at rest against a vertical wall by a horizontal force of \( 100 \mathrm{~N} \). (a) What is the frictional force exerted by the wall on the block? (b) What is the minimum horizontal force needed to prevent the block from falling if the static coefficient of friction between the wall and the block is \( 0.400 \) ? A 10-kg block is at rest on a level surface, where the coefficient of static friction is \( 0.6 \) and that for kinetic friction is \( 0.4 \). A \( 50-\mathrm{N} \) horizontal force is applied. The frictional force on the block is