Question
Two blocks of different metals are sitting on a steel platform as shown. The blocks are connected by a cord running over a frictionless pulley.
Two blocks of different metals are sitting on a steel platform as shown. The blocks are connected by a cord running over a frictionless pulley. The aluminum block has mass m1 = 4.60 kg and the copper block has mass m2 = 6.25 kg, and ? = 31.5. The blocks are released from rest.
1.) Will they move? If the blocks move, what is the magnitude of the acceleration (in m/s2) of the two-block system?
2.) If the blocks move, what is the magnitude of the tension force (in N) in the cord?
3.) If the blocks do not move, what is the sum of the magnitudes of the forces of friction (in N) acting on the blocks?
Coefficients of Friction Rubber on concrete 1.0 0.8 Steel on steel 0.74 0.57 Aluminum Aluminum on steel 0.61 0.47 Glass on glass 0.94 0.4 Copper on steel 0.58 0.36 72 1 Copper Wood on wood 0.25-0.5 0.2 Waxed wood on wet snow 0.14 0.1 Waxed wood on dry snow 0.04 Metal on metal (lubricated) 0.15 0.06 Teflon on Teflon 0.04 0.04 Steel Ice on ice 0.1 0.03 Synovial joints in humans 0.01 0.003 Note: All values are approximate. In some cases, the coefficient of friction can exceed 1.0Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started