Two blocks of 1 kg and 4 kg sit side by side on a frictionless floor. A horizontal force of 20 N pushes on the 1 kg block, which pushes the other one. Find the force Fc that the first block exerts on the second.
A 38 kg crate is pushed across a floor with a horizontal force of 155 N. The coefficient of kinetic friction is 0.25. Use g = 9.81 m/s². Find the acceleration a of the crate.
A 4 kg block slides down a slope at 35° to the horizontal. The coefficient of kinetic friction is 0.2. Use g = 9.81 m/s². Find the acceleration a of the block along the slope.
A 2 kg block slides down a slope at 20° to the horizontal. The coefficient of kinetic friction is 0.25. Use g = 9.81 m/s². Find the acceleration a of the block along the slope.
Two blocks on a level floor are joined by a light horizontal string. A horizontal force of 75 N pulls the front 9 kg block; the 12 kg block is towed behind. The coefficient of kinetic friction is 0.25 for both blocks. Use g = 9.81 m/s². Find the tension T in the connecting string.
Two blocks on a level floor are joined by a light horizontal string. A horizontal force of 105 N pulls the front 10 kg block; the 1 kg block is towed behind. The coefficient of kinetic friction is 0.25 for both blocks. Use g = 9.81 m/s². Find the tension T in the connecting string.
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