a) What is the force of static friction on block M? b) What is the maximum mass m when the blocks are still stationary?

1. A student applies a force of magnitude 75 N at an angle of 37o with the horizontal to push a 52-kg sled a distance of 4.0 m across a frictionless surface. Assuming the sled started from rest, find the final speed of the sled. 2. A student applies a force of magnitude 39.0 N at an angle of 22.6owith the horizontal to push a 4.00-kgtextbook 1.00 m across a table from rest to a final speed of 2.00 m/s. Find the work done by friction on thetextbook.

A bowling ball of mass m=2.6 kg drops from a height h = 12 m. A semi-circular tube of radius r = 5.4 m rest centered on a scale. A) Write an expression for the reading of the scale when the bowling ball is at its lowest point, in terms of the variable in the problem statement B) What does the scale read in newtons.

14-23. The force F, acting in a constant direction on the 20-kg block, has a magnitude which varies with positions of the block. Determine the speed of the block after it slides 3 m. When s=0 the block is moving to the right at 2 m/s. The coefficient of kinetic friction between the block and surface is μ = 0.3. F (N) F F = 50s² Prob. 14-23 -s (m)

Modified from the AP College Board Engineers are tasked with designing a new solar system themed roller coaster ride. The track starts at Point P, at the top of a sphere with radius R (representing Jupiter). The track goes down to ground level, then to Point Q, the top of a sphere of radius r (representing Neptune) and then back to the ground level. Ignore air resistance, and assume friction between the cart and the track is negligible Jupiter Radius R Neptune radius r