A contestant in a winter sporting event pushes a 55 kg block of ice across a frozen lake with a force 29 degrees below the horizontal. If he is successfully sliding the block with a constant force of 47 N, what is the block's acceleration?
System
Static friction s
Kinetic friction
Rubber on dry concrete
1.0 0.7 0.5 0.14 0.5 0.6 0.05 0.04 0.016 6'0 0.1 0.1 0.4
0.7 0.5 0.3 0.1 0.3 0.3 0.03 0.04 0.015 0.7 0.05 0.03 0.02
Rubber on wet concrete Wood on wood
Waxed wood on wet snow
Metal on wood Steel on steel (dry)
Steel on steel (oiled)
Teflon on steel Bone lubricated by synovial fluid Shoes on wood Shoes on ice Ice on ice Steel on ice